partial void DeletePartPackage(PartPackage instance);
 partial void UpdatePartPackage(PartPackage instance);
		private void detach_PartPackages(PartPackage entity)
		{
			this.SendPropertyChanging();
			entity.Part = null;
		}
 partial void InsertPartPackage(PartPackage instance);
		private void attach_PartPackages(PartPackage entity)
		{
			this.SendPropertyChanging();
			entity.Part = this;
		}