ASP.NET Web API media mapping extensions and help pages -

i've done media type mapping in api can specify format want data in: ie host/api/values.json or host/api/values.xml. have following routes can specify extension on controller or controller/id:

        config.routes.maphttproute(             name: "defaultapi",             routetemplate: "api/{controller}.{ext}",             defaults: new { id = routeparameter.optional }         );          config.routes.maphttproute(             name: "api2",             routetemplate: "api/{controller}/{id}.{ext}",             defaults: new { id = routeparameter.optional }         ); 

the pages generated default ones come new vs 2015 webapi/mvc app template it's autogenerated. when generates shows following examples:

get api/values.{ext}      api/values/.{ext}   <------- notice 1  api/values/{id}.{ext} 

the first , last 1 work , make sense. it's generating middle 1 doesn't make sense , doesn't work when type in browser. since auto generated i'm trying figure out why it's giving me middle example when doesn't work (and if did doesn't make lot of sense).