presto-main/src/main/java/io/prestosql/operator/NoChannelGroupByHash.java/NoChannelGroupByHash/appendValuesTo
class NoChannelGroupByHash:    @Override
    public void appendValuesTo(int groupId, PageBuilder pageBuilder, int outputChannelOffset)
    {
        throw new UnsupportedOperationException("NoChannelGroupByHash does not support appendValuesTo");
    }