presto-main/src/main/java/io/prestosql/operator/GroupByIdBlock.java/GroupByIdBlock/bytesCompare
class GroupByIdBlock:    @Override
    public int bytesCompare(int position, int offset, int length, Slice otherSlice, int otherOffset, int otherLength)
    {
        return block.bytesCompare(position, offset, length, otherSlice, otherOffset, otherLength);
    }