presto-mongodb/src/main/java/io/prestosql/plugin/mongodb/MongoColumnHandle.java/MongoColumnHandle/toColumnMetadata
class MongoColumnHandle:    public ColumnMetadata toColumnMetadata()
    {
        return ColumnMetadata.builder()
                .setName(name)
                .setType(type)
                .setHidden(hidden)
                .build();
    }