presto-redis/src/main/java/io/prestosql/plugin/redis/RedisInternalFieldDescription.java/RedisInternalFieldDescription/getColumnMetadata
class RedisInternalFieldDescription:    ColumnMetadata getColumnMetadata(boolean hidden)
    {
        return ColumnMetadata.builder()
                .setName(columnName)
                .setType(type)
                .setComment(Optional.ofNullable(comment))
                .setHidden(hidden)
                .build();
    }