Grails 3.0 applicationyml configuration for portable urls

How do I set up portable URLs in the new Grails 3.0 file application.yml

?

The following configuration doesn't seem to stick:

Grails Application / Config / application.yml

grails:
   web:
      url:
         converter: "hyphenated"

      

        
        
        
      

    

My test controller:

Grails app / controllers / BookAuthorsController.groovy

class BookAuthorsController {

   def index() {
   }

}

      

        
        
        
      

    

And a look at:
grails-app / views / BookAuthors / index.gsp

This page (with the unwanted camel url) displays OK:
http: // localhost: 8080 / bookAuthors

This page should render, but results in a page not found error (404):
http: // localhost: 8080 / book-authors