namespace System.Collections.Generic
{
    [DebuggerDisplay("Count = {Count}")]
    [DebuggerTypeProxy(typeof(System_DictionaryDebugView<?, ?>))]
    [DefaultMember("Item")]
    public class SortedDictionary<TKey, TValue> : ICollection<KeyValuePair<TKey, TValue>>, IDictionary<TKey, TValue>, IEnumerable<KeyValuePair<TKey, TValue>>, ICollection, IDictionary, IEnumerable
    {
        public bool Remove(TKey key);
    }
}