code: public function onErrorHighPri(Event $error)
      {
          $this->throttleDataRead();
          $hash = $error['hash'];
          $error['email'] = ($error['type'] & $this->cfg['emailMask'])
              && $error['isFirstOccur']
              && $this->cfg['emailTo'];
          $error['stats'] = array(
              'tsEmailed'  => 0,
              'countSince' => 0,
              'emailedTo'  => '',
          );
          if (isset($this->throttleData['errors'][$hash])) {
              $stats = \array_intersect_key($this->throttleData['errors'][$hash], $error['stats']);
              $error['stats'] = \array_merge($error['stats'], $stats);
          }
          return;
      }
docs: load throttle stats for passed error
  
  @param Event $error error event
  
  @return void