static void Main(string[] args)
{
Client client = new Client();
Abstraction abstraction;
abstraction = new Abstraction(new ConcreteImplementationA());
client.ClientCode(abstraction);
abstraction = new ExtendedAbstraction(new ConcreteImplementationB());
client.ClientCode(abstraction);
Console.ReadLine();
}
static void Main(string[] args)
{
Client client = new Client();
Abstraction abstraction;
// The client code should be able to work with any pre-configured
// abstraction-implementation combination.
abstraction = new Abstraction(new ConcreteImplementationA());
client.ClientCode(abstraction);
Console.WriteLine();
abstraction = new ExtendedAbstraction(new ConcreteImplementationB());
client.ClientCode(abstraction);
}