@Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        final ValueStoreKey key = (ValueStoreKey) o;
        return valueHashCode == key.valueHashCode &&
                uniqueId == key.uniqueId;
    }
@return A new Key instance with the next unique ID. Should be used with some form of
concurrency protection to avoid multiple keys with the same ID.
stroom-pipeline/src/main/java/stroom/pipeline/refdata/store/offheapstore/ValueStoreKey.java