docstr: Add the command input options.
docstr_tok: ["Add","the","command","input","options","."]
code: def add_module_input_arg(self):
      """
      Add the command input options.
      """
      self.arg_input_group.add_argument(
          "--audio", type=str, help="path to input audio."
      )
      self.arg_input_group.add_argument(
          "--face",
          type=str,
          help="path to video/image that contains faces to use.",
      )
  
file_path: PaddleHub/modules/image/Image_gan/gan/wav2lip/module.py
imports: import os
  import argparse
  import copy
  import paddle
  import paddlehub
  from paddlehub.module.module import moduleinfo, runnable, serving
  import numpy
  import cv2
  from .model import Wav2LipPredictor
label_desc: Use image node_id 5 for calling the wav2lip obj's underlying member method code with example usage: obj.add_module_input_arg() without return types