public Domain()
{
this._Metadatas = new EntitySet<Metadata>(new Action<Metadata>(this.attach_Metadatas), new Action<Metadata>(this.detach_Metadatas));
this._Nodes = new EntitySet<Node>(new Action<Node>(this.attach_Nodes), new Action<Node>(this.detach_Nodes));
this._Relationships = new EntitySet<Relationship>(new Action<Relationship>(this.attach_Relationships), new Action<Relationship>(this.detach_Relationships));
OnCreated();
}