namespace System.Collections.Generic
{
    [ComVisible(false)]
    [DebuggerDisplay("Count = {Count}")]
    [DebuggerTypeProxy(typeof(System_StackDebugView<?>))]
    public class Stack<T> : IEnumerable, IEnumerable<T>, IReadOnlyCollection<T>, ICollection
    {
        public T Peek();
    }
}