I know you haven't worked on the original method and it looks like I missed this during the original review.

Anyway, this method it's gigantic and it would be good to split it into multiple smaller methods. Specifically, those parts could be split out:

1. List IP forwarding rule part should be split into `ex_list_ip_forwarding_rules` method
2. List port forwarding rule part should be split into `ex_list_port_forwarding_rules` method