google.adk.evaluation.evaluator.EvaluationResult
https://github.com/google/adk-python/blob/v1.23.0/src/google/adk/evaluation/evaluator.py#L43
overall_score
overall_eval_status
per_invocation_results:
list[PerInvocationResult]
google.adk.evaluation.evaluator.PerInvocationResult
overall_rubric_scores