Error message when we mispell a func_adl function is not helpful

[gordonwatts]

Tried this:

from servicex import query as q, deliver, dataset


def func_adl_xaod_simple():
    query = q.FuncADL_ATLASr22()  # type: ignore
    jets_per_event = query.Select(lambda e: e.Jets('AnalysisJets'))
    jet_info_per_event = jets_per_event.Select(
        lambda jets: {
            'pt': jets.Select(lambda j: j.pt()),
            'eta': jets.elect(lambda j: j.eta())
        }
    )

    spec = {
        'Sample': [{
            'Name': "func_adl_xAOD_simple",
            'Dataset': dataset.FileList(
                [
                    "root://eospublic.cern.ch//eos/opendata/atlas/rucio/mc20_13TeV/DAOD_PHYSLITE.37622528._000013.pool.root.1",  # noqa: E501
                ]
            ),
            'Query': jet_info_per_event
        }]
    }
    files = deliver(spec, servicex_name="servicex-uc-af")
    assert files is not None, "No files returned from deliver! Internal error"
    return files


if __name__ == "__main__":
    files = func_adl_xaod_simple()
    assert len(files['func_adl_xAOD_simple']) == 1

(note the missing S on the second select, I get an error message on the logs as:

Traceback (most recent call last):
  File "/home/servicex/servicex_app/resources/transformation/submit.py", line 198, in post
    self.code_gen_service.generate_code_for_selection(request_rec, namespace,
  File "/home/servicex/servicex_app/code_gen_adapter.py", line 70, in generate_code_for_selection
    raise ValueError(f'Failed to generate translation code: {msg}')
ValueError: Failed to generate translation code: Internal Error: attempted to get C++ representation for AST node "Name(id='j')", but failed.