def __init__(self, retries=3, ms_backoff_initial=500):
        """Initialise the factory with a number of retries and an initial
        backoff.
        """
        self._max_retries = retries
        self._executed_retries = 0
        self._ms_backoff = ms_backoff_initial
def __init__ ( self , retries = 3 , ms_backoff_initial = 500 ) : self . _max_retries = retries self . _executed_retries = 0 self . _ms_backoff = ms_backoff_initial
Initialise the factory with a number of retries and an initial
        backoff.