Inheritance: INotifyPropertyChanging, INotifyPropertyChanged
		private void detach_Descriptors(Descriptor entity)
		{
			this.SendPropertyChanging();
			entity.DescriptorType = null;
		}
 partial void DeleteDescriptor(Descriptor instance);
 partial void UpdateDescriptor(Descriptor instance);
 partial void InsertDescriptor(Descriptor instance);
		private void detach_Descriptors(Descriptor entity)
		{
			this.SendPropertyChanging();
			entity.Relationship = null;
		}
		private void attach_Descriptors(Descriptor entity)
		{
			this.SendPropertyChanging();
			entity.Node = this;
		}