'Usage: cdl_add <source_url> [save_path] [timeout] - add an offline (cloud) download task
source_url - the URL to download file from.
save_path - path on PCS to save file to. default is to save to root directory \'/\'.
timeout - timeout in seconds. default is 3600 seconds.'

def cdl_add(self, source_url, save_path=u'/', timeout=3600):

    rpath = self.__get_cdl_dest(source_url, save_path)
    return self.__cdl_add(source_url, rpath, timeout)
