Bases: nova.objects.base.NovaPersistentObject, nova.objects.base.NovaObject, nova.objects.base.NovaObjectDictCompat
Add or delete extra_specs.
:param:to_add: A dict of new keys to add/update :param:to_delete: A list of keys to remove
Add or delete projects.
:param:to_add: A list of projects to add :param:to_delete: A list of projects to remove
Bases: nova.objects.base.ObjectListBase, nova.objects.base.NovaObject