DesignPattern_Structural_Facade

void Main()
{
    Facade facade = new Facade();
    facade.Show();
}

class Facade{
    ProductA pa = new ProductA();
    ProductB pb = new ProductB();
    public void Show(){
        pa.ShowA();
        pb.ShowB();
    }
}
class ProductA{
    public void ShowA(){}    
}
class ProductB{
    public void ShowB(){}
}