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 ppgan.utils.config import get_config
  from skimage.io import imread
  from skimage.transform import rescale
  from skimage.transform import resize
  import paddlehub
  from .model import PSGANPredictor
  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 psgan obj's underlying member method code with example usage: obj.add_module_input_arg() without return types