45         public static T elementAt<T>( this Stack<T> stack, int index )  in elementAt()  argument
47             return stack.ElementAt( index );  in elementAt()
51         public static T peek<T>( this Stack<T> stack )  in peek()  argument
53             return stack.Peek();  in peek()
57         public static T pop<T>( this Stack<T> stack )  in pop()  argument
59             return stack.Pop();  in pop()
63         public static void push<T>( this Stack<T> stack, T obj )  in push()  argument
65             stack.Push( obj );  in push()
69         public static int size<T>( this Stack<T> stack )  in size()  argument
71             return stack.Count;  in size()
75         public static void setSize<T>( this Stack<T> stack, int size )  in setSize()  argument
77             if ( size > stack.Count )  in setSize()
80             while ( stack.Count > size )  in setSize()
81                 stack.Pop();  in setSize()