docstr: Add the command config options
docstr_tok: ["Add","the","command","config","options"]
code: def add_module_config_arg(self):
      """
      Add the command config options
      """
      self.arg_config_group.add_argument(
          "--use_gpu",
          type=ast.literal_eval,
          default=False,
          help="whether use GPU for prediction",
      )
  
      self.arg_config_group.add_argument(
          "--vocoder",
          type=str,
          default="griffin-lim",
          choices=["griffin-lim", "waveflow"],
          help="the vocoder name",
      )
  
imports: import os
  import ast
  import argparse
  import importlib.util
  import nltk
  import paddle.fluid
  import paddle.fluid.dygraph
  import paddlehub
  from paddlehub.module.module import runnable
  from paddlehub.common.utils import mkdir
  from paddlehub.module.nlp_module import DataFormatError
  from paddlehub.common.logger import logger
  from paddlehub.module.module import moduleinfo, serving
  from paddlehub.common.dir import THIRD_PARTY_HOME
  from paddlehub.common.downloader import default_downloader
label_desc: Use image node_id 6 for calling the FastSpeech obj's underlying member method code with example usage: obj.add_module_config_arg() without return types