public Facade()
 {
     _subSystemOne   = new SubSystemOne();
     _subSystemTwo   = new SubSystemTwo();
     _subSystemThree = new SubSystemThree();
 }
 public Facade()
 {
     _subOne   = new SubSystemOne();
     _subTow   = new SubSystemTow();
     _subThree = new SubSystemThree();
 }