In order to write dynamic code it would be very helpful to have some kind of utility function like injector.getToken(instance) which would return the token for the specified instance.
There exist workarounds by wrapping the injector in a helper class to keep track of tokens, but I think this would rather make sense to be integrated into this library.

As an example for a use case:
I intend to use the tokens as a replacement for route urls - so I match against tokens and not route strings.
But to check if some route (by token) is active right now, I would have to perform a check like routeToken == getToken(currentView).