docs: def via_clb_upi(self, clb_upi, det_id):
          """return DOM for given CLB UPI"""
          try:
              return DOM.from_json([
                  d for d in self._json
                  if d["CLBUPI"] == clb_upi and d["DetOID"] == det_id
              ][0])
          except IndexError:
              log.critical("No DOM found for CLB UPI '{0}'".format(clb_upi))