partial void DeleteIsotope(Isotope instance);
 partial void UpdateIsotope(Isotope instance);
		private void detach_Isotopes(Isotope entity)
		{
			this.SendPropertyChanging();
			entity.Element = null;
		}
 partial void InsertIsotope(Isotope instance);
		private void attach_Isotopes(Isotope entity)
		{
			this.SendPropertyChanging();
			entity.Element = this;
		}