do_action( 'customize_save_validation_before', WP_Customize_Manager $manager )

2773		 * The dynamic portion of the hook name, `$this->ID` refers to the setting ID.2774		 *2775		 * @since 4.6.02776		 *2777		 * @param WP_Customize_Manager $manager WP_Customize_Manager instance.2778		 */2779		do_action( 'customize_save_validation_before', $this );2780 2781		// Validate settings.2782		$validated_values      = array_merge(2783			array_fill_keys( array_keys( $args['data'] ), null ), // Make sure existence/capability checks are done on value-less setting updates.2784			$post_values2785		);