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(
          "--image1", type=str, help="path to input image1."
      )
      self.arg_input_group.add_argument(
          "--image2", type=str, help="path to input image2."
      )
      self.arg_input_group.add_argument(
          "--weights",
          type=float,
          nargs="+",
          default=[0.5] * 18,
          help="different weights at each level of two latent codes",
      )
  
file_path: PaddleHub/modules/image/Image_gan/gan/styleganv2_mixing/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 skimage.io import imread
  from skimage.transform import rescale, resize
  from .model import StyleGANv2MixingPredictor
  from .util import base64_to_cv2
label_desc: Use image node_id 6 for calling the styleganv2_mixing obj's underlying member method code with example usage: obj.add_module_input_arg() without return types