presto-thrift/src/main/java/io/prestosql/plugin/thrift/ThriftColumnHandle.java/ThriftColumnHandle/toColumnMetadata
class ThriftColumnHandle:    public ColumnMetadata toColumnMetadata()
    {
        return ColumnMetadata.builder()
                .setName(columnName)
                .setType(columnType)
                .setComment(Optional.ofNullable(comment))
                .setHidden(hidden)
                .build();
    }