Gets report as table (with columns)

        :return: column names and data

def _get_table(self):
        """Gets report as table (with columns)

        :return: column names and data
        """
        data = get_inner_data(self.report)
        labels = data.keys()
        row = [
            data[key]
            for key in labels
        ]
        return list(labels), [row]