presto-main/src/main/java/io/prestosql/type/UuidType.java/UuidType/equalTo
class UuidType:    @Override
    public boolean equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
    {
        return leftBlock.getLong(leftPosition, SIZE_OF_LONG) == rightBlock.getLong(rightPosition, SIZE_OF_LONG) &&
                leftBlock.getLong(leftPosition, 0) == rightBlock.getLong(rightPosition, 0);
    }