docstr: Run as a service.
docstr_tok: ["Run","as","a","service","."]
code: def serving_method(self, images, **kwargs):
      """
      Run as a service.
      """
      images_decode = [base64_to_cv2(image) for image in images]
      results = self.recognize_text(images_decode, **kwargs)
      return results
  
file_path: PaddleHub/modules/image/text_recognition/multi_languages_ocr_db_crnn/module.py
imports: import argparse
  import os
  import ast
  import paddle
  import paddle.static
  import paddle2onnx
  import paddle2onnx
  from paddleocr import PaddleOCR
  from paddleocr.ppocr.utils.logging import get_logger
  from paddleocr.tools.infer.utility import base64_to_cv2
  from paddlehub.module.module import moduleinfo, runnable, serving
  from .utils import read_images, save_result_image, mkdir
label_desc: Use image node_id 3 for calling the MultiLangOCR obj's underlying member method code with example usage: obj.serving_method(images) and returns: results