code: public function trainTicket($images, array $options = [])
      {
          $this->simpleRequestBody = true;
  
          return $this->request(self::OCR_TRAIN_TICKET, $images, $options);
      }
docs: 印刷文字识别-火车票识别
  
  @see https://market.aliyun.com/products/57124001/cmapi020096.html
  
  @param string|SplFIleInfo $images
  @param array  $options
  null
  
  @return array