presto-tpch/src/main/java/io/prestosql/plugin/tpch/TpchMetadata.java/TpchMetadata/toColumnHandle
class TpchMetadata:    @VisibleForTesting
    TpchColumnHandle toColumnHandle(TpchColumn<?> column)
    {
        return new TpchColumnHandle(columnNaming.getName(column), getPrestoType(column));
    }