code: def _attach_record_as_json(mfg_event, record):
    
    attachment = mfg_event.attachment.add()
    attachment.name = TEST_RECORD_ATTACHMENT_NAME
    test_record_dict = htf_data.convert_to_base_types(record)
    attachment.value_binary = _convert_object_to_json(test_record_dict)
    attachment.type = test_runs_pb2.TEXT_UTF8
docs: Attach a copy of the record as JSON so we have an un-mangled copy.