Defined (1)

The class is defined in the following location(s).

/wp-includes/customize/class-wp-customize-background-image-setting.php  

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' ); 
    } 
}