namespace Microsoft.AspNetCore.Routing
{
    [DebuggerDisplay("Count = {Count}")]
    [DebuggerTypeProxy(typeof(DictionaryDebugView<string, object>))]
    [DefaultMember("Item")]
    public class RouteValueDictionary : ICollection<KeyValuePair<string!, object?>>, IDictionary<string!, object?>, IEnumerable, IEnumerable<KeyValuePair<string!, object?>>, IReadOnlyCollection<KeyValuePair<string!, object?>>, IReadOnlyDictionary<string!, object?>
    {
        public object? this[string! key] { get; set; }
    }
}