public Relationship()
{
this._Descriptors = new EntitySet<Descriptor>(new Action<Descriptor>(this.attach_Descriptors), new Action<Descriptor>(this.detach_Descriptors));
this._Metadatas = new EntitySet<Metadata>(new Action<Metadata>(this.attach_Metadatas), new Action<Metadata>(this.detach_Metadatas));
this._Domain = default(EntityRef<Domain>);
this._Node = default(EntityRef<Node>);
this._RelationshipType = default(EntityRef<RelationshipType>);
OnCreated();
}