How to use the memorious.core.manager.run_scheduled function in memorious

def scheduled(wait=False):
    """Run crawlers that are due."""
    manager.run_scheduled()
    while wait:
        # Loop and try to run scheduled crawlers at short intervals
        manager.run_scheduled()
        time.sleep(settings.SCHEDULER_INTERVAL)

def periodic(self):
        if self.scheduler.check() and not settings.DEBUG:
            log.info("Running scheduled crawlers ...")
            self.scheduler.update()
            manager.run_scheduled()

def process_schedule():
    manager.run_scheduled()