4be513f267
When nested RestControllers exist, in order to determine which arguments are associated with the parent resource, pecan looks at the get_one() method signature in the parent controller. TraitsController needs the EventTypesController.get_one method to exist in order to properly pass the `event_type` identifier. Change-Id: Ic1704c8f9c810ada4e22e8de75ef2511006e8d9d