List parameter options

[StefanNiederkofler]

Hello,

is it possible to show the parameter options in the doc?
For example:

products:
    path:     /products/{sort}
    controller: AppBundle\Controller\ProductController::indexAction
    methods:  ["GET"]
    defaults:
        sort: "default"
    requirements:
        sort: "default|alpha|newest|popular"

Now i want that the possible options "default|alpha|newest|popular" are listed in the doc, but they aren't.
The same goes for the global _locale parameter, with possible options "de|en|it"

[GuilhemN]

Isn't it shown on hover? See swagger-api/swagger-ui#1217