code: def _validate_noneof(self, definitions, field, value):
          
          valids, _errors = \
              self.__validate_logical('noneof', definitions, field, value)
          if valids > 0:
              self._error(field, errors.NONEOF, _errors,
                          valids, len(definitions))
docs: {'type': 'list', 'logical': 'noneof'}