code: func Routing(routes ...*design.RouteDefinition) {
  	if a, ok := actionDefinition(); ok {
  		for _, r := range routes {
  			r.Parent = a
  			a.Routes = append(a.Routes, r)
  		}
  	}
  }
docs: // Routing used in: Action
  //
  // Routing lists the action route. Each route is defined with a function named after the HTTP method.
  // The route function takes the path as argument. Route paths may use wildcards as described in the
  // [httptreemux](https://godoc.org/github.com/dimfeld/httptreemux) package documentation. These
  // wildcards define parameters using the `:name` or `*name` syntax where `:name` matches a path
  // segment and `*name` is a catch-all that matches the path until the end.