code: def get_expected_image_width(self):
      return 224
  
imports: from __future__ import absolute_import
  from __future__ import division
  import ast
  import argparse
  import os
  import numpy
  from paddle.inference import Config, create_predictor
  from paddlehub.module.module import moduleinfo, runnable, serving
  from .processor import postprocess, base64_to_cv2
  from .data_feed import reader
label_desc: Use image node_id 2 for calling the MobileNetV2Dishes obj's underlying member method code with example usage: obj.get_expected_image_width() and returns: int