/**
  * Delete a directory.
  *
  * @param string $dirname
  *
  * @return bool
  */
 public function deleteDir($dirname)
 {
     try {
         $response = $this->api->delete_resources_by_prefix(rtrim($dirname, '/') . '/');
         return is_array($response['deleted']);
     } catch (Api\Error $e) {
         return false;
     }
 }