namespace System.Collections.Generic
{
    [DefaultMember("Item")]
    public sealed class SegmentedDictionary<TKey, TValue> : ICollection<KeyValuePair<TKey, TValue>>, IDictionary<TKey, TValue>, IEnumerable, IEnumerable<KeyValuePair<TKey, TValue>>, ICollection, IDictionary
    {
        public sealed class ValueCollection : ICollection<TValue>, IEnumerable, IEnumerable<TValue>, IReadOnlyCollection<TValue>, ICollection
        {
            public bool Contains(TValue item);
        }
    }
}