code: def add_cmdline_args(cls, parser, partial_opt):
      parser = super().add_cmdline_args(parser, partial_opt)
      parser.set_defaults(task_prompt=TASK_PROMPT)
      return parser
  
imports: import unittest
  from parlai.core.params import ParlaiParser
  import parlai.utils.testing
  from parlai.tasks.reasoning.base import AbstractQuestionAnswer, AbstractReason, AbstractReasoningTeacher
  from dataclasses import dataclass
label_desc: Use image node_id 1 for calling the DummyAbstractReasoningTeacher obj's underlying member method code with example usage: obj.add_cmdline_args(cls, parser, partial_opt) and returns: parser