static void Main(string[] args)
{
RetrieverBuilder toteRetrieverBuilder = new ToteRetrieverBuilder();
RetrieverBuilder betSafeRetrieverBuilder = new BetSafeRetrieverBuilder();
RetrieverMaker toteRetrieverMaker = new RetrieverMaker(toteRetrieverBuilder);
RetrieverMaker betSafeRetrieverMaker = new RetrieverMaker(betSafeRetrieverBuilder);
toteRetrieverMaker.BuildRetriever();
Retriever toteRetriever = toteRetrieverMaker.GetRetriever();
betSafeRetrieverMaker.BuildRetriever();
Retriever betSafeRetriever = betSafeRetrieverMaker.GetRetriever();
toteRetriever.FetchData();
System.Console.WriteLine();
betSafeRetriever.FetchData();
}