docs: def dataoneTypes(request):
      """Return the PyXB binding to use when handling a request."""
      if is_v1_api(request):
          return d1_common.types.dataoneTypes_v1_1
      elif is_v2_api(request) or is_diag_api(request):
          return d1_common.types.dataoneTypes_v2_0
      else:
          raise d1_common.types.exceptions.ServiceFailure(
              0, 'Unknown version designator in URL. url="{}"'.format(request.path)
          )