clean(parent, ct, lev - 5);
return null;
} else if (m instanceof LNode) {
final LNode<K, V> ln = (LNode<K, V>) m;
if (cond == null) {
<BUG>final Option<V> optv = ln.get(k);
</BUG>
if (insertln(ln, k, v, ct)) {
return optv;
}

clean(parent, ct, lev - 5);
return null;
} else if (m instanceof LNode) {
final LNode<K, V> ln = (LNode<K, V>) m;
if (cond == null) {
final Optional<V> optv = ln.get(k);
if (insertln(ln, k, v, ct)) {
return optv;
}
