'Returns true if a cached poster thumbnail exists for the given Indexer ID'

def has_poster_thumbnail(self, indexer_id):

    poster_thumb_path = self.poster_thumb_path(indexer_id)
    logger.log(((u'Checking    if    file    ' + str(poster_thumb_path)) + u'    exists'), logger.DEBUG)
    return ek(os.path.isfile, poster_thumb_path)
