code: def send_all_waypoints(self):
          '''send all waypoints to vehicle'''
          self.master.waypoint_clear_all_send()
          if self.wploader.count() == 0:
              return
          self.loading_waypoints = True
          self.loading_waypoint_lasttime = time.time()
          self.master.waypoint_count_send(self.wploader.count()f send_all_waypoints(self):
          '''send all waypoints to vehicle'''
          self.master.waypoint_clear_all_send()
          if self.wploader.count() == 0:
              return
          self.loading_waypoints = True
          self.loading_waypoint_lasttime = time.time()
          self.master.waypoint_count_send(self.wploader.count())
docs: send all waypoints to vehicle