Creating a more complex endpoint

In this section, we will create a more complex endpoint, step by step. Let's do this by writing a really simple health check endpoint, as you might need if you were to run your application inside a Kubernetes cluster, or just to tell others about your health status:

1. Microsoft proposes starting with the definition of the API to add the endpoint from the developer point of view. We do the same here. This means that we will add a MapSomething method first, without an actual implementation. This will be an extension method on IEndpointRouteBuilder. We are going to call it MapMyHealthChecks:

   // the new endpoint
   endpoints.MapMyHealthChecks("/myhealth");
     
   endpoints.MapControllerRoute(
       name: "default",
       pattern: 
           "{controller=Home}/{action=Index}/{id?}");

   The new endpoint should be added in the same way as the prebuilt...