original_string: public function dir_closedir() {
      assert(isset($this->client));
      $this->client->close();
      $this->client = null;
    }
code: public function dir_closedir() {
      assert(isset($this->client));
      $this->client->close();
      $this->client = null;
    }
code_tokens: public function dir_closedir ( ) { assert ( isset ( $ this -> client ) ) ; $ this -> client -> close ( ) ; $ this -> client = null ; }
docstring: Close an open directory handle.
docstring_tokens: Close an open directory handle .