Real World ASP.NET Web API Services for .NET Framework
https://docs.microsoft.com/en-us/aspnet/web-api/overview/web-api-routing-and-actions/attribute-routing-in-web-api-2 https://www.strathweb.com/2014/10/route-matching-overriding-404-asp-net-web-api/ https://docs.microsoft.com/en-us/aspnet/web-api/overview/formats-and-model-binding/parameter-binding-in-aspnet-web-api
https://github.com/DeLoachAero/enumeration-constraint
https://www.codeproject.com/Articles/1110613/Understanding-Routing-Precedence-in-ASP-NET-MVC-an