AcornPublishing_essential-csharp-7e/EssentialCSharp-8.0/src/Chapter12/Listing12.01.TheSystemCollectionsStackMethodSignatures.cs
namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter12.Listing12_01
{
    public class Stack
    {
        public virtual object Pop()
        {
            // ...
            return new object();
        }

        public virtual void Push(object obj)
        {
            // ...
        }

        // ...
    }

}
