Наследование: INotifyPropertyChanging, INotifyPropertyChanged
		private void detach_GroupAssociations(GroupAssociation entity)
		{
			this.SendPropertyChanging();
			entity.Group = null;
		}
 partial void DeleteGroupAssociation(GroupAssociation instance);
 partial void InsertGroupAssociation(GroupAssociation instance);
 partial void UpdateGroupAssociation(GroupAssociation instance);
		private void detach_GroupAssociations(GroupAssociation entity)
		{
			this.SendPropertyChanging();
			entity.SecurableContext = null;
		}