/guava/android/guava/src/com/google/common/collect/Iterators.java
removeFrom.remove ( ) ;
@CanIgnoreReturnValue public static boolean retainAll(Iterator<?> removeFrom, Collection<?> elementsToRetain) { checkNotNull(elementsToRetain); boolean result = false; while (removeFrom.hasNext()) { if (!elementsToRetain.contains(removeFrom.next())) { <extra_id_0> result = true; } } return result; } public static boolean elementsEqual(Iterator<?> iterator1, Iterator<?> iterator2) {