name : class-wp-customize-background-image-setting.php <?php /** * Customize API: WP_Customize_Background_Image_Setting class * * @package WordPress * @subpackage Customize * @since 4.4.0 */ /** * Customizer Background Image Setting class. * * @since 3.4.0 * * @see WP_Customize_Setting */ final class WP_Customize_Background_Image_Setting extends WP_Customize_Setting { public $id = 'background_image_thumb'; /** * @since 3.4.0 * * @param $value */ public function update( $value ) { remove_theme_mod( 'background_image_thumb' ); } }