/guava/android/guava/src/com/google/common/collect/HashBiMap.java
index = index;
index = indexToRemove;
@Override public void remove() { checkForComodification(); CollectPreconditions.checkRemove(indexToRemove != ABSENT); biMap.removeEntry(indexToRemove); if (index == biMap.size) { <extra_id_0> } indexToRemove = ABSENT; expectedModCount = biMap.modCount; } }; }