/guava/guava/src/com/google/common/collect/CompactLinkedHashSet.java
if ( predecessor != null || successor != null) {
if ( predecessor != null && successor != null ) {
public void clear() { if (needsAllocArrays()) { return; } this.firstEntry = ENDPOINT; this.lastEntry = ENDPOINT; <extra_id_0> Arrays.fill(predecessor, 0, size(), 0); Arrays.fill(successor, 0, size(), 0); } super.clear(); } private int[] requirePredecessors() {