Custom_Image_Header::customize_set_last_used( WP_Customize_Manager $wp_customize )

1510	public function customize_set_last_used( $wp_customize ) {1511 1512		$header_image_data_setting = $wp_customize->get_setting( 'header_image_data' );1513 1514		if ( ! $header_image_data_setting ) {1515			return;1516		}1517 1518		$data = $header_image_data_setting->post_value();1519 1520		if ( ! isset( $data['attachment_id'] ) ) {1521			return;1522		}1523 1524		$attachment_id = $data['attachment_id'];1525		$key           = '_wp_attachment_custom_header_last_used_' . get_stylesheet();1526		update_post_meta( $attachment_id, $key, time() );1527	}