Construct a tuple of the column names for stats. Each stat has 4
        columns of data.

def _get_stats_column_names(cls):
        """Construct a tuple of the column names for stats. Each stat has 4
        columns of data.
        """
        columns = []
        stats = ('num_bytes', 'num_rows', 'location', 'partitioning_type',
                 'clustering_fields')
        stat_components = ('label', 'value', 'description', 'include')
        for stat_id in stats:
            for stat_component in stat_components:
                columns.append('stats:{}:{}'.format(stat_id, stat_component))
        return tuple(columns)