/** * constructor, invoke parent __construct * @param string $root_directory * @param array $include_file_extension * @param array $exclude_file_extension * @param bool $is_recursion * @return void */ public function __construct($root_directory, $include_file_extension, $exclude_file_extension, $is_recursion = false) { parent::__construct($root_directory, $include_file_extension, $exclude_file_extension, $is_recursion); }