def METHOD_NAME(self, cognite_client):
    res = cognite_client.extraction_pipelines.list(limit=1)
    with pytest.raises(CogniteNotFoundError):
        cognite_client.extraction_pipelines.retrieve_multiple(ids=[res[0].id], external_ids=["this does not exist"])
    retr = cognite_client.extraction_pipelines.retrieve_multiple(
        ids=[res[0].id], external_ids=["this does not exist"], ignore_unknown_ids=True
    )
    assert 1 == len(retr)