code: def nin(self, qfield, *values):
          ''' Works the same as the query expression method ``nin_``
          '''
          self.__query_obj.nin(qfield, *values)
          return self nin(self, qfield, *values):
          ''' Works the same as the query expression method ``nin_``
          '''
          self.__query_obj.nin(qfield, *values)
          return self
docs: Works the same as the query expression method ``nin_``