def get_eval_set_result(
      self, app_name: str, eval_set_result_id: str
  ) -> EvalSetResult:
    """Returns an EvalSetResult identified by app_name and eval_set_result_id."""
    raise NotImplementedError()
Returns an EvalSetResult identified by app_name and eval_set_result_id.
src/google/adk/evaluation/eval_set_results_manager.py