What is the idiomatic Ember 2 way to create instances of a custom class, with access to services

I went through a very similar issue. _lookupFactory now seems to be resolveRegistration.

Ember.getOwner(this).resolveRegistration('some:object).create();

This solution worked in my case.

https://discuss.emberjs.com/t/best-practices-accessing-app-config-from-addon-code/7006/16