public IFacade CreateClasses()
{
Class1 o1 = new Class1();
Class2 o2 = new Class2();
Class3 o3 = new Class3();
IFacade facade = new Facade(o1, o2, o3);
return(facade);
}
public Facade(Class1 object1, Class2 object2, Class3 object3)
{
this.object1 = object1 ?? throw new ArgumentNullException(nameof(object1));
this.object2 = object2 ?? throw new ArgumentNullException(nameof(object2));
this.object3 = object3 ?? throw new ArgumentNullException(nameof(object3));
}