@Override
    public String toString() {
        return this.getClass().getName();
    }
@param initialCapacity the queue initial capacity. If chunk size is fixed this will be the chunk size.
                       Must be 2 or more.
jctools-core/src/main/java/org/jctools/queues/atomic/unpadded/BaseMpscLinkedAtomicUnpaddedArrayQueue.java