WP_Customize_Nav_Menu_Setting::filter_nav_menu_options_value() WordPress Method

	protected function filter_nav_menu_options_value( $nav_menu_options, $menu_id, $auto_add ) {
		$nav_menu_options = (array) $nav_menu_options;
		if ( ! isset( $nav_menu_options['auto_add'] ) ) {
			$nav_menu_options['auto_add'] = array();
		}

		$i = array_search( $menu_id, $nav_menu_options['auto_add'], true );

		if ( $auto_add && false === $i ) {
			array_push( $nav_menu_options['auto_add'], $this->term_id );
		} elseif ( ! $auto_add && false !== $i ) {
			array_splice( $nav_menu_options['auto_add'], $i, 1 );
		}

		return $nav_menu_options;
	}