This test could probably be worded better. The test is suppose to ensure the correct thing happens when no type parameter is provided to the `store.pushPayload` method. If there is no type parameter the store needs to start somewhere so the  'global' `serializer:application` is a good place to start. Once we are within the `serializer.pushPayload` method we have access to type information again so we can using a model specific serializer to normalize this record.