presto-blackhole/src/main/java/io/prestosql/plugin/blackhole/BlackHoleTableHandle.java/BlackHoleTableHandle/toTableMetadata
class BlackHoleTableHandle:    public ConnectorTableMetadata toTableMetadata()
    {
        return new ConnectorTableMetadata(
                toSchemaTableName(),
                columnHandles.stream().map(BlackHoleColumnHandle::toColumnMetadata).collect(toList()));
    }