public static void Main()
{
Group provider = new Group();
Subscriber observer1 = new Subscriber("User: Jovan Vulin");
Subscriber observer2 = new Subscriber("User: John Doe");
provider.handlePost(100, "Welcome users!", true);
observer1.Subscribe(provider);
observer2.Subscribe(provider);
provider.handlePost(101, "C# patterns", true);
//Invalid post, shouldn't be displayed
provider.handlePost(100, "Welcome users!", true);
provider.handlePost(100, "Test users!", true);
provider.handlePost(100);
provider.handlePost(102, "Observer pattern", true);
Console.ReadLine();
}
