xenadmin/XenModel/XenAPI/VDI.cs

/*
 * Copyright (c) Citrix Systems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   1) Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2) Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials
 *      provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */


using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using Newtonsoft.Json;


namespace XenAPI
{
    /// <summary>
    /// A virtual disk image
    /// First published in XenServer 4.0.
    /// </summary>
    public partial class VDI : XenObject<VDI>
    {
        public VDI()
        {
        }

        public VDI(string uuid,
            string name_label,
            string name_description,
            List<vdi_operations> allowed_operations,
            Dictionary<string, vdi_operations> current_operations,
            XenRef<SR> SR,
            List<XenRef<VBD>> VBDs,
            List<XenRef<Crashdump>> crash_dumps,
            long virtual_size,
            long physical_utilisation,
            vdi_type type,
            bool sharable,
            bool read_only,
            Dictionary<string, string> other_config,
            bool storage_lock,
            string location,
            bool managed,
            bool missing,
            XenRef<VDI> parent,
            Dictionary<string, string> xenstore_data,
            Dictionary<string, string> sm_config,
            bool is_a_snapshot,
            XenRef<VDI> snapshot_of,
            List<XenRef<VDI>> snapshots,
            DateTime snapshot_time,
            string[] tags,
            bool allow_caching,
            on_boot on_boot,
            XenRef<Pool> metadata_of_pool,
            bool metadata_latest,
            bool is_tools_iso,
            bool cbt_enabled)
        {
            this.uuid = uuid;
            this.name_label = name_label;
            this.name_description = name_description;
            this.allowed_operations = allowed_operations;
            this.current_operations = current_operations;
            this.SR = SR;
            this.VBDs = VBDs;
            this.crash_dumps = crash_dumps;
            this.virtual_size = virtual_size;
            this.physical_utilisation = physical_utilisation;
            this.type = type;
            this.sharable = sharable;
            this.read_only = read_only;
            this.other_config = other_config;
            this.storage_lock = storage_lock;
            this.location = location;
            this.managed = managed;
            this.missing = missing;
            this.parent = parent;
            this.xenstore_data = xenstore_data;
            this.sm_config = sm_config;
            this.is_a_snapshot = is_a_snapshot;
            this.snapshot_of = snapshot_of;
            this.snapshots = snapshots;
            this.snapshot_time = snapshot_time;
            this.tags = tags;
            this.allow_caching = allow_caching;
            this.on_boot = on_boot;
            this.metadata_of_pool = metadata_of_pool;
            this.metadata_latest = metadata_latest;
            this.is_tools_iso = is_tools_iso;
            this.cbt_enabled = cbt_enabled;
        }

        /// <summary>
        /// Creates a new VDI from a Proxy_VDI.
        /// </summary>
        /// <param name="proxy"></param>
        public VDI(Proxy_VDI proxy)
        {
            this.UpdateFromProxy(proxy);
        }

        /// <summary>
        /// Updates each field of this instance with the value of
        /// the corresponding field of a given VDI.
        /// </summary>
        public override void UpdateFrom(VDI update)
        {
            uuid = update.uuid;
            name_label = update.name_label;
            name_description = update.name_description;
            allowed_operations = update.allowed_operations;
            current_operations = update.current_operations;
            SR = update.SR;
            VBDs = update.VBDs;
            crash_dumps = update.crash_dumps;
            virtual_size = update.virtual_size;
            physical_utilisation = update.physical_utilisation;
            type = update.type;
            sharable = update.sharable;
            read_only = update.read_only;
            other_config = update.other_config;
            storage_lock = update.storage_lock;
            location = update.location;
            managed = update.managed;
            missing = update.missing;
            parent = update.parent;
            xenstore_data = update.xenstore_data;
            sm_config = update.sm_config;
            is_a_snapshot = update.is_a_snapshot;
            snapshot_of = update.snapshot_of;
            snapshots = update.snapshots;
            snapshot_time = update.snapshot_time;
            tags = update.tags;
            allow_caching = update.allow_caching;
            on_boot = update.on_boot;
            metadata_of_pool = update.metadata_of_pool;
            metadata_latest = update.metadata_latest;
            is_tools_iso = update.is_tools_iso;
            cbt_enabled = update.cbt_enabled;
        }

        internal void UpdateFromProxy(Proxy_VDI proxy)
        {
            uuid = proxy.uuid == null ? null : proxy.uuid;
            name_label = proxy.name_label == null ? null : proxy.name_label;
            name_description = proxy.name_description == null ? null : proxy.name_description;
            allowed_operations = proxy.allowed_operations == null ? null : Helper.StringArrayToEnumList<vdi_operations>(proxy.allowed_operations);
            current_operations = proxy.current_operations == null ? null : Maps.convert_from_proxy_string_vdi_operations(proxy.current_operations);
            SR = proxy.SR == null ? null : XenRef<SR>.Create(proxy.SR);
            VBDs = proxy.VBDs == null ? null : XenRef<VBD>.Create(proxy.VBDs);
            crash_dumps = proxy.crash_dumps == null ? null : XenRef<Crashdump>.Create(proxy.crash_dumps);
            virtual_size = proxy.virtual_size == null ? 0 : long.Parse(proxy.virtual_size);
            physical_utilisation = proxy.physical_utilisation == null ? 0 : long.Parse(proxy.physical_utilisation);
            type = proxy.type == null ? (vdi_type) 0 : (vdi_type)Helper.EnumParseDefault(typeof(vdi_type), (string)proxy.type);
            sharable = (bool)proxy.sharable;
            read_only = (bool)proxy.read_only;
            other_config = proxy.other_config == null ? null : Maps.convert_from_proxy_string_string(proxy.other_config);
            storage_lock = (bool)proxy.storage_lock;
            location = proxy.location == null ? null : proxy.location;
            managed = (bool)proxy.managed;
            missing = (bool)proxy.missing;
            parent = proxy.parent == null ? null : XenRef<VDI>.Create(proxy.parent);
            xenstore_data = proxy.xenstore_data == null ? null : Maps.convert_from_proxy_string_string(proxy.xenstore_data);
            sm_config = proxy.sm_config == null ? null : Maps.convert_from_proxy_string_string(proxy.sm_config);
            is_a_snapshot = (bool)proxy.is_a_snapshot;
            snapshot_of = proxy.snapshot_of == null ? null : XenRef<VDI>.Create(proxy.snapshot_of);
            snapshots = proxy.snapshots == null ? null : XenRef<VDI>.Create(proxy.snapshots);
            snapshot_time = proxy.snapshot_time;
            tags = proxy.tags == null ? new string[] {} : (string [])proxy.tags;
            allow_caching = (bool)proxy.allow_caching;
            on_boot = proxy.on_boot == null ? (on_boot) 0 : (on_boot)Helper.EnumParseDefault(typeof(on_boot), (string)proxy.on_boot);
            metadata_of_pool = proxy.metadata_of_pool == null ? null : XenRef<Pool>.Create(proxy.metadata_of_pool);
            metadata_latest = (bool)proxy.metadata_latest;
            is_tools_iso = (bool)proxy.is_tools_iso;
            cbt_enabled = (bool)proxy.cbt_enabled;
        }

        public Proxy_VDI ToProxy()
        {
            Proxy_VDI result_ = new Proxy_VDI();
            result_.uuid = uuid ?? "";
            result_.name_label = name_label ?? "";
            result_.name_description = name_description ?? "";
            result_.allowed_operations = allowed_operations == null ? new string[] {} : Helper.ObjectListToStringArray(allowed_operations);
            result_.current_operations = Maps.convert_to_proxy_string_vdi_operations(current_operations);
            result_.SR = SR ?? "";
            result_.VBDs = VBDs == null ? new string[] {} : Helper.RefListToStringArray(VBDs);
            result_.crash_dumps = crash_dumps == null ? new string[] {} : Helper.RefListToStringArray(crash_dumps);
            result_.virtual_size = virtual_size.ToString();
            result_.physical_utilisation = physical_utilisation.ToString();
            result_.type = vdi_type_helper.ToString(type);
            result_.sharable = sharable;
            result_.read_only = read_only;
            result_.other_config = Maps.convert_to_proxy_string_string(other_config);
            result_.storage_lock = storage_lock;
            result_.location = location ?? "";
            result_.managed = managed;
            result_.missing = missing;
            result_.parent = parent ?? "";
            result_.xenstore_data = Maps.convert_to_proxy_string_string(xenstore_data);
            result_.sm_config = Maps.convert_to_proxy_string_string(sm_config);
            result_.is_a_snapshot = is_a_snapshot;
            result_.snapshot_of = snapshot_of ?? "";
            result_.snapshots = snapshots == null ? new string[] {} : Helper.RefListToStringArray(snapshots);
            result_.snapshot_time = snapshot_time;
            result_.tags = tags;
            result_.allow_caching = allow_caching;
            result_.on_boot = on_boot_helper.ToString(on_boot);
            result_.metadata_of_pool = metadata_of_pool ?? "";
            result_.metadata_latest = metadata_latest;
            result_.is_tools_iso = is_tools_iso;
            result_.cbt_enabled = cbt_enabled;
            return result_;
        }

        /// <summary>
        /// Creates a new VDI from a Hashtable.
        /// Note that the fields not contained in the Hashtable
        /// will be created with their default values.
        /// </summary>
        /// <param name="table"></param>
        public VDI(Hashtable table) : this()
        {
            UpdateFrom(table);
        }

        /// <summary>
        /// Given a Hashtable with field-value pairs, it updates the fields of this VDI
        /// with the values listed in the Hashtable. Note that only the fields contained
        /// in the Hashtable will be updated and the rest will remain the same.
        /// </summary>
        /// <param name="table"></param>
        public void UpdateFrom(Hashtable table)
        {
            if (table.ContainsKey("uuid"))
                uuid = Marshalling.ParseString(table, "uuid");
            if (table.ContainsKey("name_label"))
                name_label = Marshalling.ParseString(table, "name_label");
            if (table.ContainsKey("name_description"))
                name_description = Marshalling.ParseString(table, "name_description");
            if (table.ContainsKey("allowed_operations"))
                allowed_operations = Helper.StringArrayToEnumList<vdi_operations>(Marshalling.ParseStringArray(table, "allowed_operations"));
            if (table.ContainsKey("current_operations"))
                current_operations = Maps.convert_from_proxy_string_vdi_operations(Marshalling.ParseHashTable(table, "current_operations"));
            if (table.ContainsKey("SR"))
                SR = Marshalling.ParseRef<SR>(table, "SR");
            if (table.ContainsKey("VBDs"))
                VBDs = Marshalling.ParseSetRef<VBD>(table, "VBDs");
            if (table.ContainsKey("crash_dumps"))
                crash_dumps = Marshalling.ParseSetRef<Crashdump>(table, "crash_dumps");
            if (table.ContainsKey("virtual_size"))
                virtual_size = Marshalling.ParseLong(table, "virtual_size");
            if (table.ContainsKey("physical_utilisation"))
                physical_utilisation = Marshalling.ParseLong(table, "physical_utilisation");
            if (table.ContainsKey("type"))
                type = (vdi_type)Helper.EnumParseDefault(typeof(vdi_type), Marshalling.ParseString(table, "type"));
            if (table.ContainsKey("sharable"))
                sharable = Marshalling.ParseBool(table, "sharable");
            if (table.ContainsKey("read_only"))
                read_only = Marshalling.ParseBool(table, "read_only");
            if (table.ContainsKey("other_config"))
                other_config = Maps.convert_from_proxy_string_string(Marshalling.ParseHashTable(table, "other_config"));
            if (table.ContainsKey("storage_lock"))
                storage_lock = Marshalling.ParseBool(table, "storage_lock");
            if (table.ContainsKey("location"))
                location = Marshalling.ParseString(table, "location");
            if (table.ContainsKey("managed"))
                managed = Marshalling.ParseBool(table, "managed");
            if (table.ContainsKey("missing"))
                missing = Marshalling.ParseBool(table, "missing");
            if (table.ContainsKey("parent"))
                parent = Marshalling.ParseRef<VDI>(table, "parent");
            if (table.ContainsKey("xenstore_data"))
                xenstore_data = Maps.convert_from_proxy_string_string(Marshalling.ParseHashTable(table, "xenstore_data"));
            if (table.ContainsKey("sm_config"))
                sm_config = Maps.convert_from_proxy_string_string(Marshalling.ParseHashTable(table, "sm_config"));
            if (table.ContainsKey("is_a_snapshot"))
                is_a_snapshot = Marshalling.ParseBool(table, "is_a_snapshot");
            if (table.ContainsKey("snapshot_of"))
                snapshot_of = Marshalling.ParseRef<VDI>(table, "snapshot_of");
            if (table.ContainsKey("snapshots"))
                snapshots = Marshalling.ParseSetRef<VDI>(table, "snapshots");
            if (table.ContainsKey("snapshot_time"))
                snapshot_time = Marshalling.ParseDateTime(table, "snapshot_time");
            if (table.ContainsKey("tags"))
                tags = Marshalling.ParseStringArray(table, "tags");
            if (table.ContainsKey("allow_caching"))
                allow_caching = Marshalling.ParseBool(table, "allow_caching");
            if (table.ContainsKey("on_boot"))
                on_boot = (on_boot)Helper.EnumParseDefault(typeof(on_boot), Marshalling.ParseString(table, "on_boot"));
            if (table.ContainsKey("metadata_of_pool"))
                metadata_of_pool = Marshalling.ParseRef<Pool>(table, "metadata_of_pool");
            if (table.ContainsKey("metadata_latest"))
                metadata_latest = Marshalling.ParseBool(table, "metadata_latest");
            if (table.ContainsKey("is_tools_iso"))
                is_tools_iso = Marshalling.ParseBool(table, "is_tools_iso");
            if (table.ContainsKey("cbt_enabled"))
                cbt_enabled = Marshalling.ParseBool(table, "cbt_enabled");
        }

        public bool DeepEquals(VDI other, bool ignoreCurrentOperations)
        {
            if (ReferenceEquals(null, other))
                return false;
            if (ReferenceEquals(this, other))
                return true;

            if (!ignoreCurrentOperations && !Helper.AreEqual2(this.current_operations, other.current_operations))
                return false;

            return Helper.AreEqual2(this._uuid, other._uuid) &&
                Helper.AreEqual2(this._name_label, other._name_label) &&
                Helper.AreEqual2(this._name_description, other._name_description) &&
                Helper.AreEqual2(this._allowed_operations, other._allowed_operations) &&
                Helper.AreEqual2(this._SR, other._SR) &&
                Helper.AreEqual2(this._VBDs, other._VBDs) &&
                Helper.AreEqual2(this._crash_dumps, other._crash_dumps) &&
                Helper.AreEqual2(this._virtual_size, other._virtual_size) &&
                Helper.AreEqual2(this._physical_utilisation, other._physical_utilisation) &&
                Helper.AreEqual2(this._type, other._type) &&
                Helper.AreEqual2(this._sharable, other._sharable) &&
                Helper.AreEqual2(this._read_only, other._read_only) &&
                Helper.AreEqual2(this._other_config, other._other_config) &&
                Helper.AreEqual2(this._storage_lock, other._storage_lock) &&
                Helper.AreEqual2(this._location, other._location) &&
                Helper.AreEqual2(this._managed, other._managed) &&
                Helper.AreEqual2(this._missing, other._missing) &&
                Helper.AreEqual2(this._parent, other._parent) &&
                Helper.AreEqual2(this._xenstore_data, other._xenstore_data) &&
                Helper.AreEqual2(this._sm_config, other._sm_config) &&
                Helper.AreEqual2(this._is_a_snapshot, other._is_a_snapshot) &&
                Helper.AreEqual2(this._snapshot_of, other._snapshot_of) &&
                Helper.AreEqual2(this._snapshots, other._snapshots) &&
                Helper.AreEqual2(this._snapshot_time, other._snapshot_time) &&
                Helper.AreEqual2(this._tags, other._tags) &&
                Helper.AreEqual2(this._allow_caching, other._allow_caching) &&
                Helper.AreEqual2(this._on_boot, other._on_boot) &&
                Helper.AreEqual2(this._metadata_of_pool, other._metadata_of_pool) &&
                Helper.AreEqual2(this._metadata_latest, other._metadata_latest) &&
                Helper.AreEqual2(this._is_tools_iso, other._is_tools_iso) &&
                Helper.AreEqual2(this._cbt_enabled, other._cbt_enabled);
        }

        internal static List<VDI> ProxyArrayToObjectList(Proxy_VDI[] input)
        {
            var result = new List<VDI>();
            foreach (var item in input)
                result.Add(new VDI(item));

            return result;
        }

        public override string SaveChanges(Session session, string opaqueRef, VDI server)
        {
            if (opaqueRef == null)
            {
                var reference = create(session, this);
                return reference == null ? null : reference.opaque_ref;
            }
            else
            {
                if (!Helper.AreEqual2(_other_config, server._other_config))
                {
                    VDI.set_other_config(session, opaqueRef, _other_config);
                }
                if (!Helper.AreEqual2(_xenstore_data, server._xenstore_data))
                {
                    VDI.set_xenstore_data(session, opaqueRef, _xenstore_data);
                }
                if (!Helper.AreEqual2(_sm_config, server._sm_config))
                {
                    VDI.set_sm_config(session, opaqueRef, _sm_config);
                }
                if (!Helper.AreEqual2(_tags, server._tags))
                {
                    VDI.set_tags(session, opaqueRef, _tags);
                }
                if (!Helper.AreEqual2(_name_label, server._name_label))
                {
                    VDI.set_name_label(session, opaqueRef, _name_label);
                }
                if (!Helper.AreEqual2(_name_description, server._name_description))
                {
                    VDI.set_name_description(session, opaqueRef, _name_description);
                }
                if (!Helper.AreEqual2(_sharable, server._sharable))
                {
                    VDI.set_sharable(session, opaqueRef, _sharable);
                }
                if (!Helper.AreEqual2(_read_only, server._read_only))
                {
                    VDI.set_read_only(session, opaqueRef, _read_only);
                }

                return null;
            }
        }
        /// <summary>
        /// Get a record containing the current state of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static VDI get_record(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_record(session.opaque_ref, _vdi);
            else
                return new VDI(session.proxy.vdi_get_record(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get a reference to the VDI instance with the specified UUID.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_uuid">UUID of object to return</param>
        public static XenRef<VDI> get_by_uuid(Session session, string _uuid)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_by_uuid(session.opaque_ref, _uuid);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_get_by_uuid(session.opaque_ref, _uuid ?? "").parse());
        }

        /// <summary>
        /// Create a new VDI instance, and return its handle.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_record">All constructor arguments</param>
        public static XenRef<VDI> create(Session session, VDI _record)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_create(session.opaque_ref, _record);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_create(session.opaque_ref, _record.ToProxy()).parse());
        }

        /// <summary>
        /// Create a new VDI instance, and return its handle.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_record">All constructor arguments</param>
        public static XenRef<Task> async_create(Session session, VDI _record)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_create(session.opaque_ref, _record);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_create(session.opaque_ref, _record.ToProxy()).parse());
        }

        /// <summary>
        /// Destroy the specified VDI instance.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static void destroy(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_destroy(session.opaque_ref, _vdi);
            else
                session.proxy.vdi_destroy(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Destroy the specified VDI instance.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_destroy(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_destroy(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_destroy(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get all the VDI instances with the given label.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_label">label of object to return</param>
        public static List<XenRef<VDI>> get_by_name_label(Session session, string _label)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_by_name_label(session.opaque_ref, _label);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_get_by_name_label(session.opaque_ref, _label ?? "").parse());
        }

        /// <summary>
        /// Get the uuid field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static string get_uuid(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_uuid(session.opaque_ref, _vdi);
            else
                return session.proxy.vdi_get_uuid(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the name/label field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static string get_name_label(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_name_label(session.opaque_ref, _vdi);
            else
                return session.proxy.vdi_get_name_label(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the name/description field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static string get_name_description(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_name_description(session.opaque_ref, _vdi);
            else
                return session.proxy.vdi_get_name_description(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the allowed_operations field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static List<vdi_operations> get_allowed_operations(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_allowed_operations(session.opaque_ref, _vdi);
            else
                return Helper.StringArrayToEnumList<vdi_operations>(session.proxy.vdi_get_allowed_operations(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the current_operations field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static Dictionary<string, vdi_operations> get_current_operations(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_current_operations(session.opaque_ref, _vdi);
            else
                return Maps.convert_from_proxy_string_vdi_operations(session.proxy.vdi_get_current_operations(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the SR field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<SR> get_SR(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_sr(session.opaque_ref, _vdi);
            else
                return XenRef<SR>.Create(session.proxy.vdi_get_sr(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the VBDs field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static List<XenRef<VBD>> get_VBDs(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_vbds(session.opaque_ref, _vdi);
            else
                return XenRef<VBD>.Create(session.proxy.vdi_get_vbds(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the crash_dumps field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static List<XenRef<Crashdump>> get_crash_dumps(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_crash_dumps(session.opaque_ref, _vdi);
            else
                return XenRef<Crashdump>.Create(session.proxy.vdi_get_crash_dumps(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the virtual_size field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static long get_virtual_size(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_virtual_size(session.opaque_ref, _vdi);
            else
                return long.Parse(session.proxy.vdi_get_virtual_size(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the physical_utilisation field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static long get_physical_utilisation(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_physical_utilisation(session.opaque_ref, _vdi);
            else
                return long.Parse(session.proxy.vdi_get_physical_utilisation(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the type field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static vdi_type get_type(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_type(session.opaque_ref, _vdi);
            else
                return (vdi_type)Helper.EnumParseDefault(typeof(vdi_type), (string)session.proxy.vdi_get_type(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the sharable field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_sharable(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_sharable(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_sharable(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the read_only field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_read_only(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_read_only(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_read_only(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the other_config field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static Dictionary<string, string> get_other_config(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_other_config(session.opaque_ref, _vdi);
            else
                return Maps.convert_from_proxy_string_string(session.proxy.vdi_get_other_config(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the storage_lock field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_storage_lock(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_storage_lock(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_storage_lock(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the location field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static string get_location(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_location(session.opaque_ref, _vdi);
            else
                return session.proxy.vdi_get_location(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the managed field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_managed(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_managed(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_managed(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the missing field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_missing(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_missing(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_missing(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the parent field of the given VDI.
        /// First published in XenServer 4.0.
        /// Deprecated since XenServer 7.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        [Deprecated("XenServer 7.1")]
        public static XenRef<VDI> get_parent(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_parent(session.opaque_ref, _vdi);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_get_parent(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the xenstore_data field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static Dictionary<string, string> get_xenstore_data(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_xenstore_data(session.opaque_ref, _vdi);
            else
                return Maps.convert_from_proxy_string_string(session.proxy.vdi_get_xenstore_data(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the sm_config field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static Dictionary<string, string> get_sm_config(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_sm_config(session.opaque_ref, _vdi);
            else
                return Maps.convert_from_proxy_string_string(session.proxy.vdi_get_sm_config(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the is_a_snapshot field of the given VDI.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_is_a_snapshot(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_is_a_snapshot(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_is_a_snapshot(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the snapshot_of field of the given VDI.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<VDI> get_snapshot_of(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_snapshot_of(session.opaque_ref, _vdi);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_get_snapshot_of(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the snapshots field of the given VDI.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static List<XenRef<VDI>> get_snapshots(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_snapshots(session.opaque_ref, _vdi);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_get_snapshots(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the snapshot_time field of the given VDI.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static DateTime get_snapshot_time(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_snapshot_time(session.opaque_ref, _vdi);
            else
                return session.proxy.vdi_get_snapshot_time(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the tags field of the given VDI.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static string[] get_tags(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_tags(session.opaque_ref, _vdi);
            else
                return (string [])session.proxy.vdi_get_tags(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the allow_caching field of the given VDI.
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_allow_caching(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_allow_caching(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_allow_caching(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the on_boot field of the given VDI.
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static on_boot get_on_boot(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_on_boot(session.opaque_ref, _vdi);
            else
                return (on_boot)Helper.EnumParseDefault(typeof(on_boot), (string)session.proxy.vdi_get_on_boot(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the metadata_of_pool field of the given VDI.
        /// First published in XenServer 6.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Pool> get_metadata_of_pool(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_metadata_of_pool(session.opaque_ref, _vdi);
            else
                return XenRef<Pool>.Create(session.proxy.vdi_get_metadata_of_pool(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Get the metadata_latest field of the given VDI.
        /// First published in XenServer 6.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_metadata_latest(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_metadata_latest(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_metadata_latest(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the is_tools_iso field of the given VDI.
        /// First published in XenServer 7.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_is_tools_iso(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_is_tools_iso(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_is_tools_iso(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Get the cbt_enabled field of the given VDI.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static bool get_cbt_enabled(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_cbt_enabled(session.opaque_ref, _vdi);
            else
                return (bool)session.proxy.vdi_get_cbt_enabled(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Set the other_config field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_other_config">New value to set</param>
        public static void set_other_config(Session session, string _vdi, Dictionary<string, string> _other_config)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_other_config(session.opaque_ref, _vdi, _other_config);
            else
                session.proxy.vdi_set_other_config(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_other_config)).parse();
        }

        /// <summary>
        /// Add the given key-value pair to the other_config field of the given VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_key">Key to add</param>
        /// <param name="_value">Value to add</param>
        public static void add_to_other_config(Session session, string _vdi, string _key, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_add_to_other_config(session.opaque_ref, _vdi, _key, _value);
            else
                session.proxy.vdi_add_to_other_config(session.opaque_ref, _vdi ?? "", _key ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Remove the given key and its corresponding value from the other_config field of the given VDI.  If the key is not in that Map, then do nothing.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_key">Key to remove</param>
        public static void remove_from_other_config(Session session, string _vdi, string _key)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_remove_from_other_config(session.opaque_ref, _vdi, _key);
            else
                session.proxy.vdi_remove_from_other_config(session.opaque_ref, _vdi ?? "", _key ?? "").parse();
        }

        /// <summary>
        /// Set the xenstore_data field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_xenstore_data">New value to set</param>
        public static void set_xenstore_data(Session session, string _vdi, Dictionary<string, string> _xenstore_data)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_xenstore_data(session.opaque_ref, _vdi, _xenstore_data);
            else
                session.proxy.vdi_set_xenstore_data(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_xenstore_data)).parse();
        }

        /// <summary>
        /// Add the given key-value pair to the xenstore_data field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_key">Key to add</param>
        /// <param name="_value">Value to add</param>
        public static void add_to_xenstore_data(Session session, string _vdi, string _key, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_add_to_xenstore_data(session.opaque_ref, _vdi, _key, _value);
            else
                session.proxy.vdi_add_to_xenstore_data(session.opaque_ref, _vdi ?? "", _key ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Remove the given key and its corresponding value from the xenstore_data field of the given VDI.  If the key is not in that Map, then do nothing.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_key">Key to remove</param>
        public static void remove_from_xenstore_data(Session session, string _vdi, string _key)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_remove_from_xenstore_data(session.opaque_ref, _vdi, _key);
            else
                session.proxy.vdi_remove_from_xenstore_data(session.opaque_ref, _vdi ?? "", _key ?? "").parse();
        }

        /// <summary>
        /// Set the sm_config field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sm_config">New value to set</param>
        public static void set_sm_config(Session session, string _vdi, Dictionary<string, string> _sm_config)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_sm_config(session.opaque_ref, _vdi, _sm_config);
            else
                session.proxy.vdi_set_sm_config(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_sm_config)).parse();
        }

        /// <summary>
        /// Add the given key-value pair to the sm_config field of the given VDI.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_key">Key to add</param>
        /// <param name="_value">Value to add</param>
        public static void add_to_sm_config(Session session, string _vdi, string _key, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_add_to_sm_config(session.opaque_ref, _vdi, _key, _value);
            else
                session.proxy.vdi_add_to_sm_config(session.opaque_ref, _vdi ?? "", _key ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Remove the given key and its corresponding value from the sm_config field of the given VDI.  If the key is not in that Map, then do nothing.
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_key">Key to remove</param>
        public static void remove_from_sm_config(Session session, string _vdi, string _key)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_remove_from_sm_config(session.opaque_ref, _vdi, _key);
            else
                session.proxy.vdi_remove_from_sm_config(session.opaque_ref, _vdi ?? "", _key ?? "").parse();
        }

        /// <summary>
        /// Set the tags field of the given VDI.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_tags">New value to set</param>
        public static void set_tags(Session session, string _vdi, string[] _tags)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_tags(session.opaque_ref, _vdi, _tags);
            else
                session.proxy.vdi_set_tags(session.opaque_ref, _vdi ?? "", _tags).parse();
        }

        /// <summary>
        /// Add the given value to the tags field of the given VDI.  If the value is already in that Set, then do nothing.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">New value to add</param>
        public static void add_tags(Session session, string _vdi, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_add_tags(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_add_tags(session.opaque_ref, _vdi ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Remove the given value from the tags field of the given VDI.  If the value is not in that Set, then do nothing.
        /// First published in XenServer 5.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">Value to remove</param>
        public static void remove_tags(Session session, string _vdi, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_remove_tags(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_remove_tags(session.opaque_ref, _vdi ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Take a read-only snapshot of the VDI, returning a reference to the snapshot. If any driver_params are specified then these are passed through to the storage-specific substrate driver that takes the snapshot. NB the snapshot lives in the same Storage Repository as its parent.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_driver_params">Optional parameters that can be passed through to backend driver in order to specify storage-type-specific snapshot options First published in XenServer 4.1.</param>
        public static XenRef<VDI> snapshot(Session session, string _vdi, Dictionary<string, string> _driver_params)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_snapshot(session.opaque_ref, _vdi, _driver_params);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_snapshot(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_driver_params)).parse());
        }

        /// <summary>
        /// Take a read-only snapshot of the VDI, returning a reference to the snapshot. If any driver_params are specified then these are passed through to the storage-specific substrate driver that takes the snapshot. NB the snapshot lives in the same Storage Repository as its parent.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_driver_params">Optional parameters that can be passed through to backend driver in order to specify storage-type-specific snapshot options First published in XenServer 4.1.</param>
        public static XenRef<Task> async_snapshot(Session session, string _vdi, Dictionary<string, string> _driver_params)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_snapshot(session.opaque_ref, _vdi, _driver_params);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_snapshot(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_driver_params)).parse());
        }

        /// <summary>
        /// Take an exact copy of the VDI and return a reference to the new disk. If any driver_params are specified then these are passed through to the storage-specific substrate driver that implements the clone operation. NB the clone lives in the same Storage Repository as its parent.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_driver_params">Optional parameters that are passed through to the backend driver in order to specify storage-type-specific clone options First published in XenServer 4.1.</param>
        public static XenRef<VDI> clone(Session session, string _vdi, Dictionary<string, string> _driver_params)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_clone(session.opaque_ref, _vdi, _driver_params);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_clone(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_driver_params)).parse());
        }

        /// <summary>
        /// Take an exact copy of the VDI and return a reference to the new disk. If any driver_params are specified then these are passed through to the storage-specific substrate driver that implements the clone operation. NB the clone lives in the same Storage Repository as its parent.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_driver_params">Optional parameters that are passed through to the backend driver in order to specify storage-type-specific clone options First published in XenServer 4.1.</param>
        public static XenRef<Task> async_clone(Session session, string _vdi, Dictionary<string, string> _driver_params)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_clone(session.opaque_ref, _vdi, _driver_params);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_clone(session.opaque_ref, _vdi ?? "", Maps.convert_to_proxy_string_string(_driver_params)).parse());
        }

        /// <summary>
        /// Resize the VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_size">The new size of the VDI</param>
        public static void resize(Session session, string _vdi, long _size)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_resize(session.opaque_ref, _vdi, _size);
            else
                session.proxy.vdi_resize(session.opaque_ref, _vdi ?? "", _size.ToString()).parse();
        }

        /// <summary>
        /// Resize the VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_size">The new size of the VDI</param>
        public static XenRef<Task> async_resize(Session session, string _vdi, long _size)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_resize(session.opaque_ref, _vdi, _size);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_resize(session.opaque_ref, _vdi ?? "", _size.ToString()).parse());
        }

        /// <summary>
        /// Resize the VDI which may or may not be attached to running guests.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_size">The new size of the VDI</param>
        public static void resize_online(Session session, string _vdi, long _size)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_resize_online(session.opaque_ref, _vdi, _size);
            else
                session.proxy.vdi_resize_online(session.opaque_ref, _vdi ?? "", _size.ToString()).parse();
        }

        /// <summary>
        /// Resize the VDI which may or may not be attached to running guests.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_size">The new size of the VDI</param>
        public static XenRef<Task> async_resize_online(Session session, string _vdi, long _size)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_resize_online(session.opaque_ref, _vdi, _size);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_resize_online(session.opaque_ref, _vdi ?? "", _size.ToString()).parse());
        }

        /// <summary>
        /// Create a new VDI record in the database only
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_uuid">The uuid of the disk to introduce</param>
        /// <param name="_name_label">The name of the disk record</param>
        /// <param name="_name_description">The description of the disk record</param>
        /// <param name="_sr">The SR that the VDI is in</param>
        /// <param name="_type">The type of the VDI</param>
        /// <param name="_sharable">true if this disk may be shared</param>
        /// <param name="_read_only">true if this disk may ONLY be mounted read-only</param>
        /// <param name="_other_config">additional configuration</param>
        /// <param name="_location">location information</param>
        /// <param name="_xenstore_data">Data to insert into xenstore</param>
        /// <param name="_sm_config">Storage-specific config</param>
        public static XenRef<VDI> introduce(Session session, string _uuid, string _name_label, string _name_description, string _sr, vdi_type _type, bool _sharable, bool _read_only, Dictionary<string, string> _other_config, string _location, Dictionary<string, string> _xenstore_data, Dictionary<string, string> _sm_config)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_introduce(session.opaque_ref, _uuid, _name_label, _name_description, _sr, _type, _sharable, _read_only, _other_config, _location, _xenstore_data, _sm_config);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_introduce(session.opaque_ref, _uuid ?? "", _name_label ?? "", _name_description ?? "", _sr ?? "", vdi_type_helper.ToString(_type), _sharable, _read_only, Maps.convert_to_proxy_string_string(_other_config), _location ?? "", Maps.convert_to_proxy_string_string(_xenstore_data), Maps.convert_to_proxy_string_string(_sm_config)).parse());
        }

        /// <summary>
        /// Create a new VDI record in the database only
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_uuid">The uuid of the disk to introduce</param>
        /// <param name="_name_label">The name of the disk record</param>
        /// <param name="_name_description">The description of the disk record</param>
        /// <param name="_sr">The SR that the VDI is in</param>
        /// <param name="_type">The type of the VDI</param>
        /// <param name="_sharable">true if this disk may be shared</param>
        /// <param name="_read_only">true if this disk may ONLY be mounted read-only</param>
        /// <param name="_other_config">additional configuration</param>
        /// <param name="_location">location information</param>
        /// <param name="_xenstore_data">Data to insert into xenstore</param>
        /// <param name="_sm_config">Storage-specific config</param>
        public static XenRef<Task> async_introduce(Session session, string _uuid, string _name_label, string _name_description, string _sr, vdi_type _type, bool _sharable, bool _read_only, Dictionary<string, string> _other_config, string _location, Dictionary<string, string> _xenstore_data, Dictionary<string, string> _sm_config)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_introduce(session.opaque_ref, _uuid, _name_label, _name_description, _sr, _type, _sharable, _read_only, _other_config, _location, _xenstore_data, _sm_config);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_introduce(session.opaque_ref, _uuid ?? "", _name_label ?? "", _name_description ?? "", _sr ?? "", vdi_type_helper.ToString(_type), _sharable, _read_only, Maps.convert_to_proxy_string_string(_other_config), _location ?? "", Maps.convert_to_proxy_string_string(_xenstore_data), Maps.convert_to_proxy_string_string(_sm_config)).parse());
        }

        /// <summary>
        /// Create a new VDI record in the database only
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_uuid">The uuid of the disk to introduce</param>
        /// <param name="_name_label">The name of the disk record</param>
        /// <param name="_name_description">The description of the disk record</param>
        /// <param name="_sr">The SR that the VDI is in</param>
        /// <param name="_type">The type of the VDI</param>
        /// <param name="_sharable">true if this disk may be shared</param>
        /// <param name="_read_only">true if this disk may ONLY be mounted read-only</param>
        /// <param name="_other_config">additional configuration</param>
        /// <param name="_location">location information</param>
        /// <param name="_xenstore_data">Data to insert into xenstore</param>
        /// <param name="_sm_config">Storage-specific config</param>
        /// <param name="_managed">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_virtual_size">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_physical_utilisation">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_metadata_of_pool">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_is_a_snapshot">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_snapshot_time">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_snapshot_of">Storage-specific config First published in XenServer 6.1.</param>
        public static XenRef<VDI> introduce(Session session, string _uuid, string _name_label, string _name_description, string _sr, vdi_type _type, bool _sharable, bool _read_only, Dictionary<string, string> _other_config, string _location, Dictionary<string, string> _xenstore_data, Dictionary<string, string> _sm_config, bool _managed, long _virtual_size, long _physical_utilisation, string _metadata_of_pool, bool _is_a_snapshot, DateTime _snapshot_time, string _snapshot_of)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_introduce(session.opaque_ref, _uuid, _name_label, _name_description, _sr, _type, _sharable, _read_only, _other_config, _location, _xenstore_data, _sm_config, _managed, _virtual_size, _physical_utilisation, _metadata_of_pool, _is_a_snapshot, _snapshot_time, _snapshot_of);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_introduce(session.opaque_ref, _uuid ?? "", _name_label ?? "", _name_description ?? "", _sr ?? "", vdi_type_helper.ToString(_type), _sharable, _read_only, Maps.convert_to_proxy_string_string(_other_config), _location ?? "", Maps.convert_to_proxy_string_string(_xenstore_data), Maps.convert_to_proxy_string_string(_sm_config), _managed, _virtual_size.ToString(), _physical_utilisation.ToString(), _metadata_of_pool ?? "", _is_a_snapshot, _snapshot_time, _snapshot_of ?? "").parse());
        }

        /// <summary>
        /// Create a new VDI record in the database only
        /// First published in XenServer 4.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_uuid">The uuid of the disk to introduce</param>
        /// <param name="_name_label">The name of the disk record</param>
        /// <param name="_name_description">The description of the disk record</param>
        /// <param name="_sr">The SR that the VDI is in</param>
        /// <param name="_type">The type of the VDI</param>
        /// <param name="_sharable">true if this disk may be shared</param>
        /// <param name="_read_only">true if this disk may ONLY be mounted read-only</param>
        /// <param name="_other_config">additional configuration</param>
        /// <param name="_location">location information</param>
        /// <param name="_xenstore_data">Data to insert into xenstore</param>
        /// <param name="_sm_config">Storage-specific config</param>
        /// <param name="_managed">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_virtual_size">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_physical_utilisation">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_metadata_of_pool">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_is_a_snapshot">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_snapshot_time">Storage-specific config First published in XenServer 6.1.</param>
        /// <param name="_snapshot_of">Storage-specific config First published in XenServer 6.1.</param>
        public static XenRef<Task> async_introduce(Session session, string _uuid, string _name_label, string _name_description, string _sr, vdi_type _type, bool _sharable, bool _read_only, Dictionary<string, string> _other_config, string _location, Dictionary<string, string> _xenstore_data, Dictionary<string, string> _sm_config, bool _managed, long _virtual_size, long _physical_utilisation, string _metadata_of_pool, bool _is_a_snapshot, DateTime _snapshot_time, string _snapshot_of)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_introduce(session.opaque_ref, _uuid, _name_label, _name_description, _sr, _type, _sharable, _read_only, _other_config, _location, _xenstore_data, _sm_config, _managed, _virtual_size, _physical_utilisation, _metadata_of_pool, _is_a_snapshot, _snapshot_time, _snapshot_of);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_introduce(session.opaque_ref, _uuid ?? "", _name_label ?? "", _name_description ?? "", _sr ?? "", vdi_type_helper.ToString(_type), _sharable, _read_only, Maps.convert_to_proxy_string_string(_other_config), _location ?? "", Maps.convert_to_proxy_string_string(_xenstore_data), Maps.convert_to_proxy_string_string(_sm_config), _managed, _virtual_size.ToString(), _physical_utilisation.ToString(), _metadata_of_pool ?? "", _is_a_snapshot, _snapshot_time, _snapshot_of ?? "").parse());
        }

        /// <summary>
        /// Ask the storage backend to refresh the fields in the VDI object
        /// First published in XenServer 4.1.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static void update(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_update(session.opaque_ref, _vdi);
            else
                session.proxy.vdi_update(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Ask the storage backend to refresh the fields in the VDI object
        /// First published in XenServer 4.1.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_update(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_update(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_update(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Copy either a full VDI or the block differences between two VDIs into either a fresh VDI or an existing VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sr">The destination SR (only required if the destination VDI is not specified</param>
        public static XenRef<VDI> copy(Session session, string _vdi, string _sr)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_copy(session.opaque_ref, _vdi, _sr);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_copy(session.opaque_ref, _vdi ?? "", _sr ?? "").parse());
        }

        /// <summary>
        /// Copy either a full VDI or the block differences between two VDIs into either a fresh VDI or an existing VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sr">The destination SR (only required if the destination VDI is not specified</param>
        public static XenRef<Task> async_copy(Session session, string _vdi, string _sr)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_copy(session.opaque_ref, _vdi, _sr);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_copy(session.opaque_ref, _vdi ?? "", _sr ?? "").parse());
        }

        /// <summary>
        /// Copy either a full VDI or the block differences between two VDIs into either a fresh VDI or an existing VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sr">The destination SR (only required if the destination VDI is not specified</param>
        /// <param name="_base_vdi">The base VDI (only required if copying only changed blocks, by default all blocks will be copied) First published in XenServer 6.2 SP1 Hotfix 4.</param>
        /// <param name="_into_vdi">The destination VDI to copy blocks into (if omitted then a destination SR must be provided and a fresh VDI will be created) First published in XenServer 6.2 SP1 Hotfix 4.</param>
        public static XenRef<VDI> copy(Session session, string _vdi, string _sr, string _base_vdi, string _into_vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_copy(session.opaque_ref, _vdi, _sr, _base_vdi, _into_vdi);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_copy(session.opaque_ref, _vdi ?? "", _sr ?? "", _base_vdi ?? "", _into_vdi ?? "").parse());
        }

        /// <summary>
        /// Copy either a full VDI or the block differences between two VDIs into either a fresh VDI or an existing VDI.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sr">The destination SR (only required if the destination VDI is not specified</param>
        /// <param name="_base_vdi">The base VDI (only required if copying only changed blocks, by default all blocks will be copied) First published in XenServer 6.2 SP1 Hotfix 4.</param>
        /// <param name="_into_vdi">The destination VDI to copy blocks into (if omitted then a destination SR must be provided and a fresh VDI will be created) First published in XenServer 6.2 SP1 Hotfix 4.</param>
        public static XenRef<Task> async_copy(Session session, string _vdi, string _sr, string _base_vdi, string _into_vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_copy(session.opaque_ref, _vdi, _sr, _base_vdi, _into_vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_copy(session.opaque_ref, _vdi ?? "", _sr ?? "", _base_vdi ?? "", _into_vdi ?? "").parse());
        }

        /// <summary>
        /// Removes a VDI record from the database
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static void forget(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_forget(session.opaque_ref, _vdi);
            else
                session.proxy.vdi_forget(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Removes a VDI record from the database
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_forget(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_forget(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_forget(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Sets the VDI's sharable field
        /// First published in XenServer 5.5.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The new value of the VDI's sharable field</param>
        public static void set_sharable(Session session, string _vdi, bool _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_sharable(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_set_sharable(session.opaque_ref, _vdi ?? "", _value).parse();
        }

        /// <summary>
        /// Sets the VDI's read_only field
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The new value of the VDI's read_only field</param>
        public static void set_read_only(Session session, string _vdi, bool _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_read_only(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_set_read_only(session.opaque_ref, _vdi ?? "", _value).parse();
        }

        /// <summary>
        /// Set the name label of the VDI. This can only happen when then its SR is currently attached.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The name lable for the VDI</param>
        public static void set_name_label(Session session, string _vdi, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_name_label(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_set_name_label(session.opaque_ref, _vdi ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Set the name label of the VDI. This can only happen when then its SR is currently attached.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The name lable for the VDI</param>
        public static XenRef<Task> async_set_name_label(Session session, string _vdi, string _value)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_set_name_label(session.opaque_ref, _vdi, _value);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_set_name_label(session.opaque_ref, _vdi ?? "", _value ?? "").parse());
        }

        /// <summary>
        /// Set the name description of the VDI. This can only happen when its SR is currently attached.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The name description for the VDI</param>
        public static void set_name_description(Session session, string _vdi, string _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_name_description(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_set_name_description(session.opaque_ref, _vdi ?? "", _value ?? "").parse();
        }

        /// <summary>
        /// Set the name description of the VDI. This can only happen when its SR is currently attached.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The name description for the VDI</param>
        public static XenRef<Task> async_set_name_description(Session session, string _vdi, string _value)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_set_name_description(session.opaque_ref, _vdi, _value);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_set_name_description(session.opaque_ref, _vdi ?? "", _value ?? "").parse());
        }

        /// <summary>
        /// Set the value of the on_boot parameter. This value can only be changed when the VDI is not attached to a running VM.
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The value to set</param>
        public static void set_on_boot(Session session, string _vdi, on_boot _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_on_boot(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_set_on_boot(session.opaque_ref, _vdi ?? "", on_boot_helper.ToString(_value)).parse();
        }

        /// <summary>
        /// Set the value of the on_boot parameter. This value can only be changed when the VDI is not attached to a running VM.
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The value to set</param>
        public static XenRef<Task> async_set_on_boot(Session session, string _vdi, on_boot _value)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_set_on_boot(session.opaque_ref, _vdi, _value);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_set_on_boot(session.opaque_ref, _vdi ?? "", on_boot_helper.ToString(_value)).parse());
        }

        /// <summary>
        /// Set the value of the allow_caching parameter. This value can only be changed when the VDI is not attached to a running VM. The caching behaviour is only affected by this flag for VHD-based VDIs that have one parent and no child VHDs. Moreover, caching only takes place when the host running the VM containing this VDI has a nominated SR for local caching.
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The value to set</param>
        public static void set_allow_caching(Session session, string _vdi, bool _value)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_set_allow_caching(session.opaque_ref, _vdi, _value);
            else
                session.proxy.vdi_set_allow_caching(session.opaque_ref, _vdi ?? "", _value).parse();
        }

        /// <summary>
        /// Set the value of the allow_caching parameter. This value can only be changed when the VDI is not attached to a running VM. The caching behaviour is only affected by this flag for VHD-based VDIs that have one parent and no child VHDs. Moreover, caching only takes place when the host running the VM containing this VDI has a nominated SR for local caching.
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_value">The value to set</param>
        public static XenRef<Task> async_set_allow_caching(Session session, string _vdi, bool _value)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_set_allow_caching(session.opaque_ref, _vdi, _value);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_set_allow_caching(session.opaque_ref, _vdi ?? "", _value).parse());
        }

        /// <summary>
        /// Load the metadata found on the supplied VDI and return a session reference which can be used in API calls to query its contents.
        /// First published in XenServer 6.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Session> open_database(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_open_database(session.opaque_ref, _vdi);
            else
                return XenRef<Session>.Create(session.proxy.vdi_open_database(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Load the metadata found on the supplied VDI and return a session reference which can be used in API calls to query its contents.
        /// First published in XenServer 6.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_open_database(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_open_database(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_open_database(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Check the VDI cache for the pool UUID of the database on this VDI.
        /// First published in XenServer 6.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static string read_database_pool_uuid(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_read_database_pool_uuid(session.opaque_ref, _vdi);
            else
                return session.proxy.vdi_read_database_pool_uuid(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Check the VDI cache for the pool UUID of the database on this VDI.
        /// First published in XenServer 6.0.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_read_database_pool_uuid(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_read_database_pool_uuid(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_read_database_pool_uuid(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Migrate a VDI, which may be attached to a running guest, to a different SR. The destination SR must be visible to the guest.
        /// First published in XenServer 6.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sr">The destination SR</param>
        /// <param name="_options">Other parameters</param>
        public static XenRef<VDI> pool_migrate(Session session, string _vdi, string _sr, Dictionary<string, string> _options)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_pool_migrate(session.opaque_ref, _vdi, _sr, _options);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_pool_migrate(session.opaque_ref, _vdi ?? "", _sr ?? "", Maps.convert_to_proxy_string_string(_options)).parse());
        }

        /// <summary>
        /// Migrate a VDI, which may be attached to a running guest, to a different SR. The destination SR must be visible to the guest.
        /// First published in XenServer 6.1.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_sr">The destination SR</param>
        /// <param name="_options">Other parameters</param>
        public static XenRef<Task> async_pool_migrate(Session session, string _vdi, string _sr, Dictionary<string, string> _options)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_pool_migrate(session.opaque_ref, _vdi, _sr, _options);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_pool_migrate(session.opaque_ref, _vdi ?? "", _sr ?? "", Maps.convert_to_proxy_string_string(_options)).parse());
        }

        /// <summary>
        /// Enable changed block tracking for the VDI. This call is idempotent - enabling CBT for a VDI for which CBT is already enabled results in a no-op, and no error will be thrown.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static void enable_cbt(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_enable_cbt(session.opaque_ref, _vdi);
            else
                session.proxy.vdi_enable_cbt(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Enable changed block tracking for the VDI. This call is idempotent - enabling CBT for a VDI for which CBT is already enabled results in a no-op, and no error will be thrown.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_enable_cbt(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_enable_cbt(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_enable_cbt(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Disable changed block tracking for the VDI. This call is only allowed on VDIs that support enabling CBT. It is an idempotent operation - disabling CBT for a VDI for which CBT is not enabled results in a no-op, and no error will be thrown.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static void disable_cbt(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_disable_cbt(session.opaque_ref, _vdi);
            else
                session.proxy.vdi_disable_cbt(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Disable changed block tracking for the VDI. This call is only allowed on VDIs that support enabling CBT. It is an idempotent operation - disabling CBT for a VDI for which CBT is not enabled results in a no-op, and no error will be thrown.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_disable_cbt(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_disable_cbt(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_disable_cbt(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Delete the data of the snapshot VDI, but keep its changed block tracking metadata. When successful, this call changes the type of the VDI to cbt_metadata. This operation is idempotent: calling it on a VDI of type cbt_metadata results in a no-op, and no error will be thrown.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static void data_destroy(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                session.JsonRpcClient.vdi_data_destroy(session.opaque_ref, _vdi);
            else
                session.proxy.vdi_data_destroy(session.opaque_ref, _vdi ?? "").parse();
        }

        /// <summary>
        /// Delete the data of the snapshot VDI, but keep its changed block tracking metadata. When successful, this call changes the type of the VDI to cbt_metadata. This operation is idempotent: calling it on a VDI of type cbt_metadata results in a no-op, and no error will be thrown.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static XenRef<Task> async_data_destroy(Session session, string _vdi)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_data_destroy(session.opaque_ref, _vdi);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_data_destroy(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Compare two VDIs in 64k block increments and report which blocks differ. This operation is not allowed when vdi_to is attached to a VM.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_vdi_to">The second VDI.</param>
        public static string list_changed_blocks(Session session, string _vdi, string _vdi_to)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_list_changed_blocks(session.opaque_ref, _vdi, _vdi_to);
            else
                return session.proxy.vdi_list_changed_blocks(session.opaque_ref, _vdi ?? "", _vdi_to ?? "").parse();
        }

        /// <summary>
        /// Compare two VDIs in 64k block increments and report which blocks differ. This operation is not allowed when vdi_to is attached to a VM.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        /// <param name="_vdi_to">The second VDI.</param>
        public static XenRef<Task> async_list_changed_blocks(Session session, string _vdi, string _vdi_to)
        {
          if (session.JsonRpcClient != null)
              return session.JsonRpcClient.async_vdi_list_changed_blocks(session.opaque_ref, _vdi, _vdi_to);
          else
              return XenRef<Task>.Create(session.proxy.async_vdi_list_changed_blocks(session.opaque_ref, _vdi ?? "", _vdi_to ?? "").parse());
        }

        /// <summary>
        /// Get details specifying how to access this VDI via a Network Block Device server. For each of a set of NBD server addresses on which the VDI is available, the return value set contains a vdi_nbd_server_info object that contains an exportname to request once the NBD connection is established, and connection details for the address. An empty list is returned if there is no network that has a PIF on a host with access to the relevant SR, or if no such network has been assigned an NBD-related purpose in its purpose field. To access the given VDI, any of the vdi_nbd_server_info objects can be used to make a connection to a server, and then the VDI will be available by requesting the exportname.
        /// First published in XenServer 7.3.
        /// </summary>
        /// <param name="session">The session</param>
        /// <param name="_vdi">The opaque_ref of the given vdi</param>
        public static List<Vdi_nbd_server_info> get_nbd_info(Session session, string _vdi)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_nbd_info(session.opaque_ref, _vdi);
            else
                return Vdi_nbd_server_info.ProxyArrayToObjectList(session.proxy.vdi_get_nbd_info(session.opaque_ref, _vdi ?? "").parse());
        }

        /// <summary>
        /// Return a list of all the VDIs known to the system.
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        public static List<XenRef<VDI>> get_all(Session session)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_all(session.opaque_ref);
            else
                return XenRef<VDI>.Create(session.proxy.vdi_get_all(session.opaque_ref).parse());
        }

        /// <summary>
        /// Get all the VDI Records at once, in a single XML RPC call
        /// First published in XenServer 4.0.
        /// </summary>
        /// <param name="session">The session</param>
        public static Dictionary<XenRef<VDI>, VDI> get_all_records(Session session)
        {
            if (session.JsonRpcClient != null)
                return session.JsonRpcClient.vdi_get_all_records(session.opaque_ref);
            else
                return XenRef<VDI>.Create<Proxy_VDI>(session.proxy.vdi_get_all_records(session.opaque_ref).parse());
        }

        /// <summary>
        /// Unique identifier/object reference
        /// </summary>
        public virtual string uuid
        {
            get { return _uuid; }
            set
            {
                if (!Helper.AreEqual(value, _uuid))
                {
                    _uuid = value;
                    Changed = true;
                    NotifyPropertyChanged("uuid");
                }
            }
        }
        private string _uuid = "";

        /// <summary>
        /// a human-readable name
        /// </summary>
        public virtual string name_label
        {
            get { return _name_label; }
            set
            {
                if (!Helper.AreEqual(value, _name_label))
                {
                    _name_label = value;
                    Changed = true;
                    NotifyPropertyChanged("name_label");
                }
            }
        }
        private string _name_label = "";

        /// <summary>
        /// a notes field containing human-readable description
        /// </summary>
        public virtual string name_description
        {
            get { return _name_description; }
            set
            {
                if (!Helper.AreEqual(value, _name_description))
                {
                    _name_description = value;
                    Changed = true;
                    NotifyPropertyChanged("name_description");
                }
            }
        }
        private string _name_description = "";

        /// <summary>
        /// list of the operations allowed in this state. This list is advisory only and the server state may have changed by the time this field is read by a client.
        /// </summary>
        public virtual List<vdi_operations> allowed_operations
        {
            get { return _allowed_operations; }
            set
            {
                if (!Helper.AreEqual(value, _allowed_operations))
                {
                    _allowed_operations = value;
                    Changed = true;
                    NotifyPropertyChanged("allowed_operations");
                }
            }
        }
        private List<vdi_operations> _allowed_operations = new List<vdi_operations>() {};

        /// <summary>
        /// links each of the running tasks using this object (by reference) to a current_operation enum which describes the nature of the task.
        /// </summary>
        public virtual Dictionary<string, vdi_operations> current_operations
        {
            get { return _current_operations; }
            set
            {
                if (!Helper.AreEqual(value, _current_operations))
                {
                    _current_operations = value;
                    Changed = true;
                    NotifyPropertyChanged("current_operations");
                }
            }
        }
        private Dictionary<string, vdi_operations> _current_operations = new Dictionary<string, vdi_operations>() {};

        /// <summary>
        /// storage repository in which the VDI resides
        /// </summary>
        [JsonConverter(typeof(XenRefConverter<SR>))]
        public virtual XenRef<SR> SR
        {
            get { return _SR; }
            set
            {
                if (!Helper.AreEqual(value, _SR))
                {
                    _SR = value;
                    Changed = true;
                    NotifyPropertyChanged("SR");
                }
            }
        }
        private XenRef<SR> _SR = new XenRef<SR>(Helper.NullOpaqueRef);

        /// <summary>
        /// list of vbds that refer to this disk
        /// </summary>
        [JsonConverter(typeof(XenRefListConverter<VBD>))]
        public virtual List<XenRef<VBD>> VBDs
        {
            get { return _VBDs; }
            set
            {
                if (!Helper.AreEqual(value, _VBDs))
                {
                    _VBDs = value;
                    Changed = true;
                    NotifyPropertyChanged("VBDs");
                }
            }
        }
        private List<XenRef<VBD>> _VBDs = new List<XenRef<VBD>>() {};

        /// <summary>
        /// list of crash dumps that refer to this disk
        /// </summary>
        [JsonConverter(typeof(XenRefListConverter<Crashdump>))]
        public virtual List<XenRef<Crashdump>> crash_dumps
        {
            get { return _crash_dumps; }
            set
            {
                if (!Helper.AreEqual(value, _crash_dumps))
                {
                    _crash_dumps = value;
                    Changed = true;
                    NotifyPropertyChanged("crash_dumps");
                }
            }
        }
        private List<XenRef<Crashdump>> _crash_dumps = new List<XenRef<Crashdump>>() {};

        /// <summary>
        /// size of disk as presented to the guest (in bytes). Note that, depending on storage backend type, requested size may not be respected exactly
        /// </summary>
        public virtual long virtual_size
        {
            get { return _virtual_size; }
            set
            {
                if (!Helper.AreEqual(value, _virtual_size))
                {
                    _virtual_size = value;
                    Changed = true;
                    NotifyPropertyChanged("virtual_size");
                }
            }
        }
        private long _virtual_size;

        /// <summary>
        /// amount of physical space that the disk image is currently taking up on the storage repository (in bytes)
        /// </summary>
        public virtual long physical_utilisation
        {
            get { return _physical_utilisation; }
            set
            {
                if (!Helper.AreEqual(value, _physical_utilisation))
                {
                    _physical_utilisation = value;
                    Changed = true;
                    NotifyPropertyChanged("physical_utilisation");
                }
            }
        }
        private long _physical_utilisation;

        /// <summary>
        /// type of the VDI
        /// </summary>
        [JsonConverter(typeof(vdi_typeConverter))]
        public virtual vdi_type type
        {
            get { return _type; }
            set
            {
                if (!Helper.AreEqual(value, _type))
                {
                    _type = value;
                    Changed = true;
                    NotifyPropertyChanged("type");
                }
            }
        }
        private vdi_type _type;

        /// <summary>
        /// true if this disk may be shared
        /// </summary>
        public virtual bool sharable
        {
            get { return _sharable; }
            set
            {
                if (!Helper.AreEqual(value, _sharable))
                {
                    _sharable = value;
                    Changed = true;
                    NotifyPropertyChanged("sharable");
                }
            }
        }
        private bool _sharable;

        /// <summary>
        /// true if this disk may ONLY be mounted read-only
        /// </summary>
        public virtual bool read_only
        {
            get { return _read_only; }
            set
            {
                if (!Helper.AreEqual(value, _read_only))
                {
                    _read_only = value;
                    Changed = true;
                    NotifyPropertyChanged("read_only");
                }
            }
        }
        private bool _read_only;

        /// <summary>
        /// additional configuration
        /// </summary>
        [JsonConverter(typeof(StringStringMapConverter))]
        public virtual Dictionary<string, string> other_config
        {
            get { return _other_config; }
            set
            {
                if (!Helper.AreEqual(value, _other_config))
                {
                    _other_config = value;
                    Changed = true;
                    NotifyPropertyChanged("other_config");
                }
            }
        }
        private Dictionary<string, string> _other_config = new Dictionary<string, string>() {};

        /// <summary>
        /// true if this disk is locked at the storage level
        /// </summary>
        public virtual bool storage_lock
        {
            get { return _storage_lock; }
            set
            {
                if (!Helper.AreEqual(value, _storage_lock))
                {
                    _storage_lock = value;
                    Changed = true;
                    NotifyPropertyChanged("storage_lock");
                }
            }
        }
        private bool _storage_lock;

        /// <summary>
        /// location information
        /// First published in XenServer 4.1.
        /// </summary>
        public virtual string location
        {
            get { return _location; }
            set
            {
                if (!Helper.AreEqual(value, _location))
                {
                    _location = value;
                    Changed = true;
                    NotifyPropertyChanged("location");
                }
            }
        }
        private string _location = "";

        /// <summary>
        /// 
        /// </summary>
        public virtual bool managed
        {
            get { return _managed; }
            set
            {
                if (!Helper.AreEqual(value, _managed))
                {
                    _managed = value;
                    Changed = true;
                    NotifyPropertyChanged("managed");
                }
            }
        }
        private bool _managed;

        /// <summary>
        /// true if SR scan operation reported this VDI as not present on disk
        /// </summary>
        public virtual bool missing
        {
            get { return _missing; }
            set
            {
                if (!Helper.AreEqual(value, _missing))
                {
                    _missing = value;
                    Changed = true;
                    NotifyPropertyChanged("missing");
                }
            }
        }
        private bool _missing;

        /// <summary>
        /// This field is always null. Deprecated
        /// </summary>
        [JsonConverter(typeof(XenRefConverter<VDI>))]
        public virtual XenRef<VDI> parent
        {
            get { return _parent; }
            set
            {
                if (!Helper.AreEqual(value, _parent))
                {
                    _parent = value;
                    Changed = true;
                    NotifyPropertyChanged("parent");
                }
            }
        }
        private XenRef<VDI> _parent = new XenRef<VDI>(Helper.NullOpaqueRef);

        /// <summary>
        /// data to be inserted into the xenstore tree (/local/domain/0/backend/vbd/&lt;domid&gt;/&lt;device-id&gt;/sm-data) after the VDI is attached. This is generally set by the SM backends on vdi_attach.
        /// First published in XenServer 4.1.
        /// </summary>
        [JsonConverter(typeof(StringStringMapConverter))]
        public virtual Dictionary<string, string> xenstore_data
        {
            get { return _xenstore_data; }
            set
            {
                if (!Helper.AreEqual(value, _xenstore_data))
                {
                    _xenstore_data = value;
                    Changed = true;
                    NotifyPropertyChanged("xenstore_data");
                }
            }
        }
        private Dictionary<string, string> _xenstore_data = new Dictionary<string, string>() {};

        /// <summary>
        /// SM dependent data
        /// First published in XenServer 4.1.
        /// </summary>
        [JsonConverter(typeof(StringStringMapConverter))]
        public virtual Dictionary<string, string> sm_config
        {
            get { return _sm_config; }
            set
            {
                if (!Helper.AreEqual(value, _sm_config))
                {
                    _sm_config = value;
                    Changed = true;
                    NotifyPropertyChanged("sm_config");
                }
            }
        }
        private Dictionary<string, string> _sm_config = new Dictionary<string, string>() {};

        /// <summary>
        /// true if this is a snapshot.
        /// First published in XenServer 5.0.
        /// </summary>
        public virtual bool is_a_snapshot
        {
            get { return _is_a_snapshot; }
            set
            {
                if (!Helper.AreEqual(value, _is_a_snapshot))
                {
                    _is_a_snapshot = value;
                    Changed = true;
                    NotifyPropertyChanged("is_a_snapshot");
                }
            }
        }
        private bool _is_a_snapshot = false;

        /// <summary>
        /// Ref pointing to the VDI this snapshot is of.
        /// First published in XenServer 5.0.
        /// </summary>
        [JsonConverter(typeof(XenRefConverter<VDI>))]
        public virtual XenRef<VDI> snapshot_of
        {
            get { return _snapshot_of; }
            set
            {
                if (!Helper.AreEqual(value, _snapshot_of))
                {
                    _snapshot_of = value;
                    Changed = true;
                    NotifyPropertyChanged("snapshot_of");
                }
            }
        }
        private XenRef<VDI> _snapshot_of = new XenRef<VDI>(Helper.NullOpaqueRef);

        /// <summary>
        /// List pointing to all the VDIs snapshots.
        /// First published in XenServer 5.0.
        /// </summary>
        [JsonConverter(typeof(XenRefListConverter<VDI>))]
        public virtual List<XenRef<VDI>> snapshots
        {
            get { return _snapshots; }
            set
            {
                if (!Helper.AreEqual(value, _snapshots))
                {
                    _snapshots = value;
                    Changed = true;
                    NotifyPropertyChanged("snapshots");
                }
            }
        }
        private List<XenRef<VDI>> _snapshots = new List<XenRef<VDI>>() {};

        /// <summary>
        /// Date/time when this snapshot was created.
        /// First published in XenServer 5.0.
        /// </summary>
        [JsonConverter(typeof(XenDateTimeConverter))]
        public virtual DateTime snapshot_time
        {
            get { return _snapshot_time; }
            set
            {
                if (!Helper.AreEqual(value, _snapshot_time))
                {
                    _snapshot_time = value;
                    Changed = true;
                    NotifyPropertyChanged("snapshot_time");
                }
            }
        }
        private DateTime _snapshot_time = DateTime.ParseExact("19700101T00:00:00Z", "yyyyMMddTHH:mm:ssZ", CultureInfo.InvariantCulture);

        /// <summary>
        /// user-specified tags for categorization purposes
        /// First published in XenServer 5.0.
        /// </summary>
        public virtual string[] tags
        {
            get { return _tags; }
            set
            {
                if (!Helper.AreEqual(value, _tags))
                {
                    _tags = value;
                    Changed = true;
                    NotifyPropertyChanged("tags");
                }
            }
        }
        private string[] _tags = {};

        /// <summary>
        /// true if this VDI is to be cached in the local cache SR
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        public virtual bool allow_caching
        {
            get { return _allow_caching; }
            set
            {
                if (!Helper.AreEqual(value, _allow_caching))
                {
                    _allow_caching = value;
                    Changed = true;
                    NotifyPropertyChanged("allow_caching");
                }
            }
        }
        private bool _allow_caching = false;

        /// <summary>
        /// The behaviour of this VDI on a VM boot
        /// First published in XenServer 5.6 FP1.
        /// </summary>
        [JsonConverter(typeof(on_bootConverter))]
        public virtual on_boot on_boot
        {
            get { return _on_boot; }
            set
            {
                if (!Helper.AreEqual(value, _on_boot))
                {
                    _on_boot = value;
                    Changed = true;
                    NotifyPropertyChanged("on_boot");
                }
            }
        }
        private on_boot _on_boot = on_boot.persist;

        /// <summary>
        /// The pool whose metadata is contained in this VDI
        /// First published in XenServer 6.0.
        /// </summary>
        [JsonConverter(typeof(XenRefConverter<Pool>))]
        public virtual XenRef<Pool> metadata_of_pool
        {
            get { return _metadata_of_pool; }
            set
            {
                if (!Helper.AreEqual(value, _metadata_of_pool))
                {
                    _metadata_of_pool = value;
                    Changed = true;
                    NotifyPropertyChanged("metadata_of_pool");
                }
            }
        }
        private XenRef<Pool> _metadata_of_pool = new XenRef<Pool>("OpaqueRef:NULL");

        /// <summary>
        /// Whether this VDI contains the latest known accessible metadata for the pool
        /// First published in XenServer 6.0.
        /// </summary>
        public virtual bool metadata_latest
        {
            get { return _metadata_latest; }
            set
            {
                if (!Helper.AreEqual(value, _metadata_latest))
                {
                    _metadata_latest = value;
                    Changed = true;
                    NotifyPropertyChanged("metadata_latest");
                }
            }
        }
        private bool _metadata_latest = false;

        /// <summary>
        /// Whether this VDI is a Tools ISO
        /// First published in XenServer 7.0.
        /// </summary>
        public virtual bool is_tools_iso
        {
            get { return _is_tools_iso; }
            set
            {
                if (!Helper.AreEqual(value, _is_tools_iso))
                {
                    _is_tools_iso = value;
                    Changed = true;
                    NotifyPropertyChanged("is_tools_iso");
                }
            }
        }
        private bool _is_tools_iso = false;

        /// <summary>
        /// True if changed blocks are tracked for this VDI
        /// First published in XenServer 7.3.
        /// </summary>
        public virtual bool cbt_enabled
        {
            get { return _cbt_enabled; }
            set
            {
                if (!Helper.AreEqual(value, _cbt_enabled))
                {
                    _cbt_enabled = value;
                    Changed = true;
                    NotifyPropertyChanged("cbt_enabled");
                }
            }
        }
        private bool _cbt_enabled = false;
    }
}