code: def get_units_for_task_name(self, taske_name: str) -> List[MockUnit]:
      return self._data.keys()
  
imports: import unittest
  from typing import Any, Dict, List
  from parlai.crowdsourcing.utils.analysis import AbstractResultsCompiler
  from collections import defaultdict
label_desc: Use image node_id 2 for calling the MockMephistoBrowser obj's underlying member method code with example usage: obj.get_units_for_task_name(taske_name) and returns: self