static void Main(string[] args)
{
Client client = new Client();
Subsystem1 s1 = new Subsystem1();
Subsystem2 s2 = new Subsystem2();
Facade facade = new Facade(s1, s2);
client.ClientCode(facade);
}
public Facade(Subsystem1 s1, Subsystem2 s2)
{
this.Subsystem1 = s1;
this.Subsystem2 = s2;
}