code: def create(cls, api, default_name=None, description=None):
          
          path = 'group'
  
          data = {}
          if default_name:
              data['default_group_name'] = default_name
          if description:
              data['description'] = description
          if api.domain:
              data['domain'] = api.domain
  
          response_data = api.request(path, data=data)
  
          id = response_data['group_id']
          group = cls(api, id)
          group.default_name = response_data['default_group_name']
  
          return group
docs: http://docs.fiesta.cc/list-management-api.html#creating-a-group
  
          200 character max on the description.