After a run through the DSL, the TimeExtensions#kept method should contain an array of all of the items to keep. Each item will be a hash with two keys: a :constraint key, which contains a range of Times (from oldest to newest), and a :scope key, which will indicate whether the backup to look at is a weekly, monthly, etc. If no :scope key is given, then all of the backups in the time range given by the :constraint key will be assumed to be kept.