def add_eval_case(self, app_name: str, eval_set_id: str, eval_case: EvalCase):
    """Adds the given EvalCase to an existing EvalSet identified by app_name and eval_set_id.

    Raises:
      NotFoundError: If the eval set is not found.
    """
Adds the given EvalCase to an existing EvalSet identified by app_name and eval_set_id.

    Raises:
      NotFoundError: If the eval set is not found.
    
src/google/adk/evaluation/eval_sets_manager.py