@Override
    public boolean equals(Object o) {
        if (!(o instanceof TimelineInteger)) return false;
        TimelineInteger other = (TimelineInteger) o;
        return value == other.value;
    }
This is a mutable integer which can be snapshotted. 
<br>
This class requires external synchronization.
server-common/src/main/java/org/apache/kafka/timeline/TimelineInteger.java