/guava/android/guava/src/com/google/common/collect/Collections2.java
return collection.addAll( unfiltered) ;
return unfiltered.addAll ( collection ) ;
} @Override public boolean addAll(Collection<? extends E> collection) { for (E element : collection) { checkArgument(predicate.apply(element)); } <extra_id_0> } @Override public void clear() { Iterables.removeIf(unfiltered, predicate); } @Override