Stateful helper to access container properties

We are using ember-i18n for our project and are trying to clean up the syntax of our translation string keys. For example:

{{t 'order-reports.sub-nav.groups.title'}}

… would be a lot nicer if it was simply:

{{t 'groups.title'}}

We want to have our translation strings ‘namespaced’ by the container names. For example, in a component sub-nav, the translation strings would be:

'component:sub-nav': {
  'groups': { 
    'title': 'Groups',
    ...
  }
}

To accomplish this we want to implement a helper that will automatically prefix whatever string it is passed with the container name.

I know that this.__proto__.debugContainerKey contains the name for the container object. I want to try and access that property from inside of a helper. But so far it seems the only way I can access application context from within the helper is through the use of services. I am not sure if services could be applicable to this situation.