presto-orc/src/main/java/io/prestosql/orc/metadata/OrcMetadataReader.java/OrcMetadataReader/toColumnEncoding
class OrcMetadataReader:    private static ColumnMetadata<ColumnEncoding> toColumnEncoding(List<OrcProto.ColumnEncoding> columnEncodings)
    {
        return new ColumnMetadata<>(columnEncodings.stream()
                .map(OrcMetadataReader::toColumnEncoding)
                .collect(toImmutableList()));
    }