partial void DeleteUsersCourse(UsersCourse instance);
 partial void UpdateUsersCourse(UsersCourse instance);
		private void detach_UsersCourses(UsersCourse entity)
		{
			this.SendPropertyChanging();
			entity.User = null;
		}
 partial void InsertUsersCourse(UsersCourse instance);
		private void attach_UsersCourses(UsersCourse entity)
		{
			this.SendPropertyChanging();
			entity.User = this;
		}