code: def add_sentiment_args(parser):
      parser.add_argument(
          "--charlm",
          default="default",
          type=str,
          help="Which charlm to run on.  Will use the default charlm for this language/model if not set.  Set to None to turn off charlm for languages with a default charlm",
      )
      parser.add_argument(
          "--no_charlm",
          dest="charlm",
          action="store_const",
          const=None,
          help="Don't use a charlm, even if one is used by default for this package",
      )
  
      parser.add_argument(
          "--use_bert",
          default=False,
          action="store_true",
          help="Use the default transformer for this language",
      )
  
file_path: stanza/stanza/utils/training/run_sentiment.py
imports: import logging
  import os
  from stanza.models import classifier
  from stanza.utils.training import common
  from stanza.utils.training.common import Mode, build_charlm_args, choose_charlm, find_wordvec_pretrain
  from stanza.resources.default_packages import default_charlms, default_pretrains
label_desc: Use image node_id 1 for calling a global function with example usage: add_sentiment_args(parser) without return types