<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def __send_exc_clear(self, log_if_exc_set=None):
 """Clear send exception and time. If exception was previously was set, optionally log log_if_exc_set at INFO level. """

        if not (log_if_exc_set is None or self.__send_exc is None):
            logger.info(log_if_exc_set)
        self.__send_exc_time = None
        self.__send_exc = None