partial void DeleteAuthorBook(AuthorBook instance);
 partial void UpdateAuthorBook(AuthorBook instance);
		private void detach_AuthorBooks(AuthorBook entity)
		{
			this.SendPropertyChanging();
			entity.Author = null;
		}
 partial void InsertAuthorBook(AuthorBook instance);
		private void attach_AuthorBooks(AuthorBook entity)
		{
			this.SendPropertyChanging();
			entity.Author = this;
		}