presto-rcfile/src/main/java/io/prestosql/rcfile/binary/BinaryRcFileEncoding.java/BinaryRcFileEncoding/structEncoding
class BinaryRcFileEncoding:    @Override
    public ColumnEncoding structEncoding(Type type, List<ColumnEncoding> fieldEncodings)
    {
        return new StructEncoding(
                type,
                fieldEncodings.stream()
                        .map(field -> (BinaryColumnEncoding) field)
                        .collect(Collectors.toList()));
    }