def save_items(self, save=True, metadata=None, **key_value):
        """Save multiple items in json"""
        _json = self.json

        if metadata:
            if metadata not in _json:
                _json[metadata] = {}
            _json[metadata].update(key_value)
        else:
            _json.update(key_value)

        self.json = _json

        if save:
            return self.save()
        else:
            return True