}

        @Override
        public Iterator<Entry<K, V>> iterator() {
          return asMapEntryIterator(backingSet(), function);
        }
      }
      return new EntrySetImpl();
    }
  }

  static <K extends @Nullable Object, V extends @Nullable Object>
      Iterator<Entry<K, V>> asMapEntryIterator(Set<K> set, final Function<? super K, V> function) {

      @Override
      Map<K, Collection<V>> map() {
        return AsMap.this;
      }

      @Override
      public Iterator<Entry<K, Collection<V>>> iterator() {
        return Maps.asMapEntryIterator(multimap.keySet(), key -> multimap.get(key));
      }

      @Override
      public boolean remove(@CheckForNull Object o) {
        if (!contains(o)) {
          return false;
        }