vertexai.evaluation.EvalTask
https://github.com/googleapis/python-aiplatform/blob/v1.89.0/vertexai/evaluation/eval_task.py#L60
#Gen_AI_Evaluation_Service
#google-cloud-aiplatform
使い方
https://github.com/googleapis/python-aiplatform/blob/v1.89.0/tests/system/vertexai/test_evaluation.py