void Main()
{
IMediator mediator = new ConcreteMediator();
ColleagueA talkColleague = new ColleagueA(mediator);
ColleagueB fightColleague = new ColleagueB(mediator);
talkColleague.DoSomething();
fightColleague.DoSomething();
}
public void RegisterA(ColleagueA cA)
{
talk = cA;
}
