prevent them from being serialised alongside the API properties. This will also
be useful for moving the API bindings out of XenModel.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
because the differentiation was in the filters, which can be passed in as parameters
to the base class, and other than this they were only adding complexity.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>