presto-elasticsearch/src/main/java/io/prestosql/elasticsearch/BuiltinColumns.java/BuiltinColumns/getMetadata
class BuiltinColumns:    public ColumnMetadata getMetadata()
    {
        return ColumnMetadata.builder()
                .setName(name)
                .setType(type)
                .setHidden(true)
                .build();
    }