--- a/wp/wp-includes/customize/class-wp-customize-background-image-control.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/customize/class-wp-customize-background-image-control.php	Fri Sep 05 18:40:08 2025 +0200
@@ -15,6 +15,13 @@
  * @see WP_Customize_Image_Control
  */
 class WP_Customize_Background_Image_Control extends WP_Customize_Image_Control {
+
+	/**
+	 * Customize control type.
+	 *
+	 * @since 4.1.0
+	 * @var string
+	 */
 	public $type = 'background';
 
 	/**