diff -r 34716fd837a4 -r be944660c56a wp/wp-admin/includes/class-wp-upgrader-skin.php
--- a/wp/wp-admin/includes/class-wp-upgrader-skin.php	Tue Dec 15 15:52:01 2020 +0100
+++ b/wp/wp-admin/includes/class-wp-upgrader-skin.php	Wed Sep 21 18:19:35 2022 +0200
@@ -20,7 +20,7 @@
 	 *
 	 * @since 2.8.0
 	 *
-	 * @var object
+	 * @var WP_Upgrader
 	 */
 	public $upgrader;
 
@@ -81,6 +81,8 @@
 	}
 
 	/**
+	 * @since 2.8.0
+	 *
 	 * @param WP_Upgrader $upgrader
 	 */
 	public function set_upgrader( &$upgrader ) {
@@ -91,6 +93,7 @@
 	}
 
 	/**
+	 * @since 3.0.0
 	 */
 	public function add_strings() {
 	}
@@ -137,6 +140,7 @@
 	}
 
 	/**
+	 * @since 2.8.0
 	 */
 	public function header() {
 		if ( $this->done_header ) {
@@ -148,6 +152,7 @@
 	}
 
 	/**
+	 * @since 2.8.0
 	 */
 	public function footer() {
 		if ( $this->done_footer ) {
@@ -158,6 +163,8 @@
 	}
 
 	/**
+	 * @since 2.8.0
+	 *
 	 * @param string|WP_Error $errors
 	 */
 	public function error( $errors ) {
@@ -178,6 +185,8 @@
 	}
 
 	/**
+	 * @since 2.8.0
+	 *
 	 * @param string $string
 	 * @param mixed  ...$args Optional text replacements.
 	 */
@@ -244,10 +253,12 @@
 	}
 
 	/**
+	 * @since 3.0.0
 	 */
 	public function bulk_header() {}
 
 	/**
+	 * @since 3.0.0
 	 */
 	public function bulk_footer() {}
 
@@ -256,7 +267,7 @@
 	 *
 	 * @since 5.5.0
 	 *
-	 * @param WP_Error $wp_error WP_Error
+	 * @param WP_Error $wp_error WP_Error object.
 	 * @return bool
 	 */
 	public function hide_process_failed( $wp_error ) {