private void detach_UserServices(UserService entity)
		{
			this.SendPropertyChanging();
			entity.User = null;
		}
		private void attach_UserServices(UserService entity)
		{
			this.SendPropertyChanging();
			entity.User = this;
		}
 partial void UpdateUserService(UserService instance);
 partial void DeleteUserService(UserService instance);
 partial void InsertUserService(UserService instance);