gistfile1.cs

public partial class QuoteCalculatorServiceClient : System.ServiceModel.ClientBase<IQuoteCalculatorService>, IQuoteCalculatorService {
        
    public System.Threading.Tasks.Task<ClientApp.WCFService.Quote> GetQuoteAsync(string ticker) {
        return System.Threading.Tasks.Task<ClientApp.WCFService.Quote>.Factory.FromAsync(
            new System.Func<string, System.AsyncCallback, object, System.IAsyncResult>((
                (IQuoteCalculatorService)(this)).BeginGetQuote), 
                new System.Func<System.IAsyncResult, ClientApp.WCFService.Quote>(((IQuoteCalculatorService)(this)).EndGetQuote), ticker, null);
    }
        
    public System.Threading.Tasks.Task<System.Collections.ObjectModel.ReadOnlyCollection<ClientApp.WCFService.Quote>> GetQuotesAsync(string[] tickers) {
        return System.Threading.Tasks.Task<System.Collections.ObjectModel.ReadOnlyCollection<ClientApp.WCFService.Quote>>.Factory.FromAsync(
            new System.Func<string[], System.AsyncCallback, object, System.IAsyncResult>(((IQuoteCalculatorService)(this)).BeginGetQuotes), 
            new System.Func<System.IAsyncResult, System.Collections.ObjectModel.ReadOnlyCollection<ClientApp.WCFService.Quote>>(
                ((IQuoteCalculatorService)(this)).EndGetQuotes), tickers, null);
    }
}