Dot-notation representation data requires parent entries

[erunion]

/**
 * @api-data preferences.videos.privacy.view (string) - The users' video view privacy preference.
 */

With an annotation like this, the API Blueprint generator requires that separate @api-data annotations are in place for preferences, preferences.videos, and preferences.videos.privacy or else what's generated in the API Blueprint file is just:

- `preferences` (object)

[erunion]

This bug only exists if there isn't anything else in the tree of that object. So if we add preferences.videos.privacy.something, the full tree will be present in the Blueprint.