@Override
    public boolean offer(final E e) {
        if (null == e) {
            throw new NullPointerException();
        }
        final LinkedQueueAtomicNode<E> nextNode = newNode(e);
        final LinkedQueueAtomicNode<E> prevProducerNode = xchgProducerNode(nextNode);
        // Should a producer thread get interrupted here the chain WILL be broken until that thread is resumed
        // and completes the store in prev.next. This is a "bubble".
        prevProducerNode.soNext(nextNode);
        return true;
    }
{@inheritDoc} <br>
<p>
IMPLEMENTATION NOTES:<br>
Offer is allowed from multiple threads.<br>
Offer allocates a new node and:
<ol>
<li>Swaps it atomically with current producer node (only one producer 'wins')
<li>Sets the new node as the node following from the swapped producer node
</ol>
This works because each producer is guaranteed to 'plant' a new node and link the old node. No 2
producers can get the same producer node as part of XCHG guarantee.

@see MessagePassingQueue#offer(Object)
@see java.util.Queue#offer(java.lang.Object)
jctools-core/src/main/java/org/jctools/queues/atomic/MpscLinkedAtomicQueue.java