code: def _clear_minimum_terms(self, match_key):
          
          try:  # clear match = True case
              del self._query_terms[match_key]['$gte']
          except KeyError:
              pass
          try:  # clear match = False case
              del self._query_terms[match_key]['$lt']
          except KeyError:
              pass
          try:
              if self._query_terms[match_key] == {}:
                  del self._query_terms[match_key]
          except KeyError:
              pass
docs: clears minimum match_key term values