code quality: fix @var tags for nullable WP_Theme props

Author: justlevine

src/wp-includes/class-wp-theme.php

@@ -114,15 +114,15 @@ final class WP_Theme implements ArrayAccess {
 	 * Header data from the theme's style.css file after being sanitized.
 	 *
 	 * @since 3.4.0
-	 * @var array
+	 * @var ?array
 	 */
 	private $headers_sanitized;
 
 	/**
 	 * Is this theme a block theme.
 	 *
 	 * @since 6.2.0
-	 * @var bool
+	 * @var ?bool
 	 */
 	private $block_theme;
 
@@ -132,15 +132,15 @@ final class WP_Theme implements ArrayAccess {
 	 * Cached due to sorting functions running over the translated name.
 	 *
 	 * @since 3.4.0
-	 * @var string
+	 * @var ?string
 	 */
 	private $name_translated;
 
 	/**
 	 * Errors encountered when initializing the theme.
 	 *
 	 * @since 3.4.0
-	 * @var WP_Error
+	 * @var ?WP_Error
 	 */
 	private $errors;
 
@@ -162,31 +162,31 @@ final class WP_Theme implements ArrayAccess {
 	 * Otherwise, 'template' is the same as 'stylesheet'.
 	 *
 	 * @since 3.4.0
-	 * @var string
+	 * @var ?string
 	 */
 	private $template;
 
 	/**
 	 * A reference to the parent theme, in the case of a child theme.
 	 *
 	 * @since 3.4.0
-	 * @var WP_Theme
+	 * @var ?WP_Theme
 	 */
 	private $parent;
 
 	/**
 	 * URL to the theme root, usually an absolute URL to wp-content/themes
 	 *
 	 * @since 3.4.0
-	 * @var string
+	 * @var ?string
 	 */
 	private $theme_root_uri;
 
 	/**
 	 * Flag for whether the theme's textdomain is loaded.
 	 *
 	 * @since 3.4.0
-	 * @var bool
+	 * @var ?bool
 	 */
 	private $textdomain_loaded;
 
@@ -202,7 +202,7 @@ final class WP_Theme implements ArrayAccess {
 	 * Block template folders.
 	 *
 	 * @since 6.4.0
-	 * @var string[]
+	 * @var ?string[]
 	 */
 	private $block_template_folders;