presto-orc/src/main/java/io/prestosql/orc/DiskRange.java/DiskRange/DiskRange
class DiskRange:    public DiskRange(long offset, int length)
    {
        checkArgument(offset >= 0, "offset is negative");
        checkArgument(length > 0, "length must be at least 1");

        this.offset = offset;
        this.length = length;
    }