How to use the logentries.helpers.check_token function in Logentries

def __init__(self, token, use_tls=True, verbose=True, format=None, le_api=LE_API_DEFAULT, le_port=LE_PORT_DEFAULT, le_tls_port=LE_TLS_PORT_DEFAULT):
        logging.Handler.__init__(self)
        self.token = token
        self.good_config = True
        self.verbose = verbose
        # give the socket 10 seconds to flush,
        # otherwise drop logs
        self.timeout = 10
        if not le_helpers.check_token(token):
            if self.verbose:
                dbg(INVALID_TOKEN)
            self.good_config = False
        if format is None:
            format = logging.Formatter('%(asctime)s : %(levelname)s, %(message)s',
                                       '%a %b %d %H:%M:%S %Z %Y')
        self.setFormatter(format)
        self.setLevel(logging.DEBUG)
        if use_tls and ssl_enabled:
            self._thread = TLSSocketAppender(verbose=verbose, le_api=le_api, le_port=le_port, le_tls_port=le_tls_port)
        else:
            self._thread = SocketAppender(verbose=verbose, le_api=le_api, le_port=le_port, le_tls_port=le_tls_port)