def register_observer(self):
        """ Register all observable which are of interest
        """
        self.execution_engine.add_observer(self, "start", notify_before_function=self.on_start)
        self.execution_engine.add_observer(self, "pause", notify_before_function=self.on_pause)
        self.execution_engine.add_observer(self, "stop", notify_before_function=self.on_stop)
def register_observer ( self ) : self . execution_engine . add_observer ( self , "start" , notify_before_function = self . on_start ) self . execution_engine . add_observer ( self , "pause" , notify_before_function = self . on_pause ) self . execution_engine . add_observer ( self , "stop" , notify_before_function = self . on_stop )
Register all observable which are of interest