public long getBucketSequence() {
        return 0;
    }
<p>Returns the identifier used to order message buckets. Any two messages that have the same bucket sequence are
ensured to arrive at the NEXT peer in the order they were sent by THIS peer. This value is only respected if the
{@link #hasBucketSequence()} method returns true.</p>

@return The bucket sequence.
messagebus/src/main/java/com/yahoo/messagebus/Message.java