////   This file contains the C++ code from Program 7.16 of//   "Data Structures and Algorithms//    with Object-Oriented Design Patterns in C++"//   by Bruno R. Preiss.////   Copyright (c) 1998 by Bruno R. Preiss, P.Eng.  All rights reserved.////   http://www.pads.uwaterloo.ca/Bruno.Preiss/books/opus4/programs/pgm07_16.cpp//void ListAsLinkedList::InsertAfter (    Position const& arg, Object& object){    Pos const& position = dynamic_cast<Pos const&> (arg);    if (&position.list != this || position.element == 0)	throw invalid_argument ("invalid position");    linkedList.InsertAfter (position.element, &object);    ++count;}