The whitespace here is a bit hard to follow, could we do something like:

```
def featured_topics_and_policies_list_params
  params.require(:featured_topics_and_policies_list).permit(
    :summary, 
    :link_to_filtered_policies, 
    featured_items_attributes: [:id, :item_type, :ordering,:item_id, :ended_at]
  )
end
```