partial void DeleteGroopsUser(GroopsUser instance);
 partial void InsertGroopsUser(GroopsUser instance);
 partial void UpdateGroopsUser(GroopsUser instance);
 private void attach_Users(GroopsUser entity)
 {
     this.SendPropertyChanging();
     entity.Room = this;
 }
 private void detach_Users(GroopsUser entity)
 {
     this.SendPropertyChanging();
     entity.Room = null;
 }
 partial void DeleteGroopsUser(GroopsUser instance);
 partial void UpdateGroopsUser(GroopsUser instance);
 partial void InsertGroopsUser(GroopsUser instance);
		private void detach_Users(GroopsUser entity)
		{
			this.SendPropertyChanging();
			entity.Room = null;
		}
		private void attach_Users(GroopsUser entity)
		{
			this.SendPropertyChanging();
			entity.Room = this;
		}