namespace Microsoft.AspNetCore.Mvc.ModelBinding
{
    [DebuggerDisplay("Entries = {Count}, IsValid = {IsValid}")]
    [DebuggerTypeProxy(typeof(ModelStateDictionaryDebugView))]
    [DefaultMember("Item")]
    public class ModelStateDictionary : IEnumerable<KeyValuePair<string!, ModelStateEntry?>>, IReadOnlyCollection<KeyValuePair<string!, ModelStateEntry?>>, IReadOnlyDictionary<string!, ModelStateEntry?>, IEnumerable
    {
        public ModelStateEntry? this[string! key] { get; }
    }
}