/// <summary> /// 包含判定 /// </summary> public bool Contains(T item) => Shells.Contains(item);
/// <summary> /// キーの包含判定 /// </summary> public bool ContainsKey(TKey key) => Shells.Contains(key);
bool IDictionary.Contains(object key) => Shells.Contains((TKey)key);
bool IReadOnlyDictionary <TKey, DataProperty <TValue> > .ContainsKey(TKey key) => Shells.Contains(key);