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(
          "--content", type=str, help="path to content image."
      )
      self.arg_input_group.add_argument(
          "--style", type=str, help="path to style image."
      )
  
imports: import argparse
  import copy
  import os
  import cv2
  import numpy
  import paddle
  from skimage.io import imread
  from skimage.transform import rescale
  from skimage.transform import resize
  import paddlehub
  from .model import LapStylePredictor
  from .util import base64_to_cv2
  from paddlehub.module.module import moduleinfo
  from paddlehub.module.module import runnable
  from paddlehub.module.module import serving
label_desc: Use image node_id 6 for calling the Lapstyle_circuit obj's underlying member method code with example usage: obj.add_module_input_arg() without return types