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(
          "--input_image",
          type=str,
          default=None,
          help="Pictures to write poetry",
      )
  
file_path: PaddleHub/modules/text/text_generation/reading_pictures_writing_poems/module.py
imports: import argparse
  import ast
  import os
  from translate import Translator
  import paddlehub
  from paddlehub.module.module import moduleinfo
  from paddlehub.module.module import runnable
label_desc: Use image node_id 6 for calling the ReadingPicturesWritingPoems obj's underlying member method code with example usage: obj.add_module_input_arg() without return types