1. you have a `root router` with child `router a` and child `router b` 2. in `router a` we use template that references `:local_view` in this router 3. in `router b` we include template handled by `router a`
root routerwith childrouter aand childrouter brouter awe use template that references:local_viewin this routerrouter bwe include template handled byrouter a