code: def merge(self, dict_name, values):
          
  
          with self.lock:
              d = self.dicts.get(dict_name)
              if d:
                  deep_merge_dicts(d, values)
              else:
                  d = copy.deepcopy(values)
              self.dicts[dict_name] = d
docs: Performs deep-merge of :attr:`values` onto the :class:`Mapping` object
          named :attr:`dict_name`.
  
          If :attr:`dict_name` does not yet exist, then a deep copy of
          :attr:`values` is assigned as the initial mapping object for the given
          name.
  
          :param str dict_name:  The name of the dict onto which the values
              should be merged.