static void Main(string[] args)
{
DataBaseSubSystem dataBaseSubSystem = new DataBaseSubSystem();
FileSubSystem fileSubSystem = new FileSubSystem();
Facade facade = new Facade(dataBaseSubSystem, fileSubSystem);
Console.WriteLine(facade.Operation());
}
public Facade(DataBaseSubSystem dataBaseSubSystem, FileSubSystem fileSubSystem)
{
_dataBaseSubSystem = dataBaseSubSystem;
_fileSubSystem = fileSubSystem;
}