code: def dump(self, destination, with_defaults=False):
          
          if isinstance(destination, six.string_types):
              with open(destination, 'w', encoding='utf-8') as f:
                  self._rw.dump_config_to_file(self._config, f, with_defaults=with_defaults)
          else:
              self._rw.dump_config_to_file(self._config, destination, with_defaults=with_defaults)
docs: Write configuration values to the specified destination.
  
          Args:
              destination:
              with_defaults (bool): if ``True``, values of items with no custom values will be included in the output
                  if they have a default value set.