WebApi 2.0 Configuration

[devmondo]

Hi, i have just started a project with MVC 5.0 and i have WebApi controllers in imported assemblies, before we used to do this to register them with Attribute Routing

GlobalConfiguration.Configuration.Routes.MapHttpAttributeRoutes(config =>
            {
                config.AddRoutesFromAssemblyOf<ImportedLibrary>();
                config.AddDefaultRouteConstraint(@"[Ii]d$", new RegexRouteConstraint(@"^\d+$"));
                config.UseRouteHandler(() => new HttpCultureAwareRoutingHandler());
                config.AddTranslationProvider(translationProvider);                
                config.UseLowercaseRoutes = true;
                config.InheritActionsFromBaseController = true;
                config.AutoGenerateRouteNames = true;
            });

but now i cant, the only thing available now is

    GlobalConfiguration.Configuration.MapHttpAttributeRoutes();

i want this as i have mentioned so i can register Routes in Controllers in imported Assemblies, plus i want to use RoutePrefix, so what i do is in Imported Library i create base WebApiController and add the Route Prefix to it and then in main Application i inherit from it in all controllers so i wont repeat myself.

thanks in advanced.