code: def add_cmdline_args(
      cls, parser: ParlaiParser, partial_opt: Optional[Opt] = None
  ) -> ParlaiParser:
      super().add_cmdline_args(parser, partial_opt)
      parser = parser.add_argument_group("NLI Teacher Args")
      parser.add_argument(
          "-dfm",
          "--dialog-format",
          type="bool",
          default=False,
          help="True if one would like to convert to a dialogue format without special tokens such as 'Premise'"
          " and 'Hypothesis' (default: False).",
      )
      parser.add_argument(
          "-bcl",
          "--binary-classes",
          type="bool",
          default=False,
          help="True if label candidates are (contradiction, not_contradiction), and (entailment, contradiction, "
          "neutral) otherwise (default: False).",
      )
      return parser
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.teachers import MultiTaskTeacher
  import parlai.tasks.anli.agents
  import parlai.tasks.multinli.agents
  import parlai.tasks.snli.agents
  import parlai.tasks.dialogue_nli.agents
  from copy import deepcopy
label_desc: Use image node_id 1 for calling the NliTeacher obj's underlying member method code with example usage: obj.add_cmdline_args(cls, parser, partial_opt) and returns: parser