/guava/android/guava/src/com/google/common/collect/FilteredEntryMultimap.java
return AsMap.this.remove ( o ) != null;
@Override public boolean retainAll(Collection<?> c) { return removeEntriesIf(Maps.<K>keyPredicateOnEntries(not(in(c)))); } @Override public boolean remove(@CheckForNull Object o) { <extra_id_0> } } return new KeySetImpl(); } @Override Set<Entry<K, Collection<V>>> createEntrySet() {