| http://www.w3.org/ns/prov#value | - aram string $theme_root Theme root. 134 * @param WP_Error|null $child If this theme is a parent theme, the child may be passed for validation purposes. 135 */ 136 public function __construct( $theme_dir, $theme_root, $child = null ) { 137 // Initialize caching on first run. 138 if ( ! isset( self::$persistently_cache ) ) { 139 self::$persistently_cache = apply_filters( 'wp_cache_themes_persistentl
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