code: def update_group(self, group_id, **kwargs):
          
          properties = {}
  
          # make the key camel-case transformable
          if 'create_datacenter' in kwargs:
              kwargs['create_data_center'] = kwargs.pop('create_datacenter')
  
          for attr, value in kwargs.items():
              properties[self._underscore_to_camelcase(attr)] = value
  
          data = {
              "properties": properties
          }
  
          response = self._perform_request(
              url='/um/groups/%s' % group_id,
              method='PUT',
              data=json.dumps(data))
  
          return response
docs: Updates a group.
  
          :param      group_id: The unique ID of the group.
          :type       group_id: ``str``