'Convert a Target into attributes suitable for storage.'

@classmethod
def unpack_target(cls, target):

    sr_names = target.subreddit_names
    target_sr_names = cls.SR_NAMES_DELIM.join(sr_names)
    target_name = (target.collection.name if target.is_collection else cls.SUBREDDIT_TARGET)
    return (target_sr_names, target_name)
