code: def _validate_allof(self, definitions, field, value):
          
          valids, _errors = \
              self.__validate_logical('allof', definitions, field, value)
          if valids < len(definitions):
              self._error(field, errors.ALLOF, _errors,
                          valids, len(definitions))
docs: {'type': 'list', 'logical': 'allof'}