code: def add_office(self, type, name, address=None, phone=None, fax=None,
                     email=None, **kwargs):
          
          office_dict = dict(type=type, address=address, name=name, phone=phone,
                             fax=fax, email=email, **kwargs)
          self['offices'].append(office_dict)
docs: Allowed office types:
              capitol
              district