<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def reset_crops(self):
 """ Reset all known crops to the default crop. If settings.ASSET_CELERY is specified then the task will be run async """


        if self._can_crop():
            if settings.CELERY or settings.USE_CELERY_DECORATOR:
                # this means that we are using celery
                tasks.reset_crops.apply_async(args=[self.pk], countdown=5)
            else:
                tasks.reset_crops(None, asset=self)