Наследование: INotifyPropertyChanging, INotifyPropertyChanged
		private void detach_Memberships(Membership entity)
		{
			this.SendPropertyChanging();
			entity.Group = null;
		}
		private void attach_Memberships(Membership entity)
		{
			this.SendPropertyChanging();
			entity.Group = this;
		}
 partial void DeleteMembership(Membership instance);
 partial void UpdateMembership(Membership instance);
 partial void InsertMembership(Membership instance);
		private void detach_Memberships(Membership entity)
		{
			this.SendPropertyChanging();
			entity.SecurableContext = null;
		}