using System; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; namespace PingPong { public static class Program { public static void Main(string[] args) => CreateHostBuilder(args).Build().Run(); public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureServices(ConfigureServices); private static void ConfigureServices(HostBuilderContext context, IServiceCollection services) { // TODO: this } } }