/**
  * Override API call to enable retry with servers' clock auto sync method.
  *
  * @param string $path
  * @param string $method
  * @param array  $params
  * @param bool   $retry Is in retry or first call attempt.
  *
  * @return array|mixed|string|void
  */
 private function _call($path, $method = 'GET', $params = array(), $retry = false)
 {
     $this->_logger->entrance();
     $result = $this->_api->Api($path, $method, $params);
     if (null !== $result && isset($result->error) && 'request_expired' === $result->error->code) {
         if (!$retry) {
             // Try to sync clock diff.
             if (false !== $this->_sync_clock_diff()) {
                 return $this->_call($path, $method, $params, true);
             }
         }
     }
     if (null !== $result && isset($result->error)) {
         // Log API errors.
         $this->_logger->error($result->error->message);
     }
     return $result;
 }