def __init__(self, ms_backoff=0):
        """Initialise with a backoff time."""
        super(ActionRetryException, self).__init__()
        self.ms_backoff = ms_backoff
def __init__ ( self , ms_backoff = 0 ) : super ( ActionRetryException , self ) . __init__ ( ) self . ms_backoff = ms_backoff
Initialise with a backoff time.