assertEquals(!expectedCollection.isEmpty(), multimap().containsKey(key));
    }
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testRemovePropagatesToAsMapEntrySet() {
    List<Entry<K, V>> entries = copyToList(multimap().entries());
    for (Entry<K, V> entry : entries) {
      resetContainer();

      K key = entry.getKey();
      V value = entry.getValue();