Locating assets

I believe that there are scenarios where it is useful to have a route such as the following:

    <link rel='stylesheet' href='@routes.WebJarAssets.retrieve("css/bootstrap.min.css")'>

i.e. where a WebJar asset is located and then retrieved. The above is functionally equivalent to:

    <link rel='stylesheet' href='@routes.WebJarAssets.at(WebJarAssets.locate("css/bootstrap.min.css"))'>