JakeWharton/trakt-java — pull request #24 by UweTrottmann (2011-12-08 14:40:36+00:00)
Title: Wait field for failure reply when checking in

As can be seen on http://trakt.tv/api-docs/show-checkin

I'm not sure if it might make more sense to build a dedicated 'CheckinResponse' similar to the available 'RatingResponse'.