public Metadata()
{
this._DescriptorType = default(EntityRef<DescriptorType>);
this._Domain = default(EntityRef<Domain>);
this._MetadataType = default(EntityRef<MetadataType>);
this._Node = default(EntityRef<Node>);
this._Node1 = default(EntityRef<Node>);
this._Relationship = default(EntityRef<Relationship>);
OnCreated();
}