def METHOD_NAME(self, data_id):
    dict_data = self.read_dispatcher(data_id)
    identifier = []
    data = []
    for key, value in dict_data.items():
        identifier.append('{}.{}'.format(data_id, key))
        data.append(value)
    if len(data) == 1:
        return DataRepresentation(data[0], identifier=data_id)
    return DataRepresentation(data, identifier=identifier)