/guava/guava/src/com/google/common/collect/FilteredEntryMultimap.java
if ( !( collection.isEmpty( ) ) ) {   return immutableEntry( key, collection) ; }
[Delete]
while (backingIterator.hasNext()) { Entry<K, Collection<V>> entry = backingIterator.next(); K key = entry.getKey(); Collection<V> collection = filterCollection(entry.getValue(), new ValuePredicate(key)); if (!collection.isEmpty()) { <extra_id_0> } } return endOfData(); } }; }