presto-orc/src/main/java/io/prestosql/orc/writer/ListColumnWriter.java/ListColumnWriter/getColumnEncodings
class ListColumnWriter:    @Override
    public Map<OrcColumnId, ColumnEncoding> getColumnEncodings()
    {
        ImmutableMap.Builder<OrcColumnId, ColumnEncoding> encodings = ImmutableMap.builder();
        encodings.put(columnId, columnEncoding);
        encodings.putAll(elementWriter.getColumnEncodings());
        return encodings.build();
    }