</BUG>
if (e != null)
size.decrement();
return e;
}
<BUG>@Override public GridConcurrentSkipListSetEx<E> clone() {
GridConcurrentSkipListSetEx<E> clone = (GridConcurrentSkipListSetEx<E>)super.clone();
clone.size = new LongAdder8();
clone.size.add(size.intValue());
return clone;</BUG>
}

boolean res = super.remove(o);
if (res)
size.decrement();
return res;
}
@Nullable @Override public Holder<K, V> pollFirst() {
Holder<K, V> e = super.pollFirst();
if (e != null)
size.decrement();
return e;
