The class tries to remove the keys when they are false to keep the YAML clean. In this case, would using the following default work:

```ruby
{}
```

And then in the methods do something like:

```ruby
       def inhibit_warnings_for_pod(pod_name)
          inhibit_warnings_hash['for_pods'] ||= []
          inhibit_warnings_hash['for_pods'] << pod_name
       end
```