Cover "newly" uncovered line
Cover "newly" uncovered line

Covers  /app/classes/query/comment_for_target.rb#target_instance l.21:
```ruby
      raise("The model #{params[:type].inspect} does not support comments!")
```

MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer