### Question:
LongOption extends ValueOption<LongOption> { @Override public int compareTo(WritableRawComparable o) { LongOption other = (LongOption) o; if (nullValue | other.nullValue) { if (nullValue & other.nullValue) { return 0; } return nullValue ? -1 : +1; } return Long.compare(value, other.value); } LongOption();  LongOption(long value); long get(); long or(long alternate); void add(long delta); void add(LongOption other); @Deprecated LongOption modify(long newValue); @Override @Deprecated void copyFrom(LongOption optionOrNull); @Override int hashCode(); @Override boolean equals(Object obj); boolean has(long other); @Override int compareTo(WritableRawComparable o); @Override String toString(); @Override void write(DataOutput out); @SuppressWarnings("deprecation") @Override void readFields(DataInput in); @SuppressWarnings("deprecation") @Override int restore(byte[] bytes, int offset, int limit); @Override int getSizeInBytes(byte[] buf, int offset); @Override int compareInBytes(byte[] b1, int o1, byte[] b2, int o2); static int getBytesLength(byte[] bytes, int offset, int length); static int compareBytes(
            byte[] b1, int s1, int l1,
            byte[] b2, int s2, int l2);  }### Answer:
@Test public void compareTo() { LongOption a = new LongOption(); LongOption b = new LongOption(); LongOption c = new LongOption(); LongOption d = new LongOption(); a.modify(Long.MIN_VALUE); b.modify(0); c.modify(50); d.modify(Long.MIN_VALUE); assertThat(compare(a, b), lessThan(0)); assertThat(compare(b, c), lessThan(0)); assertThat(compare(c, a), greaterThan(0)); assertThat(compare(a, c), lessThan(0)); assertThat(compare(b, a), greaterThan(0)); assertThat(compare(c, b), greaterThan(0)); assertThat(compare(a, d), is(0)); }