Why is a Required * path parameter {namespace} getting detected by Swagger?

Question

My .Net MVC project has the below ApiController:

But the Swagger UI generates two methods:

Observe that the ActionName TestMethod1 is omitted(probably because there is only one HttpGet in this controller)

Answer 1

This was due to the DefaultRoute not having the {action} in the path.

 routes.MapRoute(
                name: "Default",
                url: "{controller}/{id}",
                defaults: new { controller = "Addon", action = "Index", id = UrlParameter.Optional }
            );

It should be like:

 routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Addon", action = "Index", id = UrlParameter.Optional }
            );