code: def set_fence_enabled(self, do_enable):
          '''Enable or disable fence'''
          self.master.mav.command_long_send(
              self.target_system,
              self.target_component,
              mavutil.mavlink.MAV_CMD_DO_FENCE_ENABLE, 0,
              do_enable, 0, 0, 0, 0, 0, 0f set_fence_enabled(self, do_enable):
          '''Enable or disable fence'''
          self.master.mav.command_long_send(
              self.target_system,
              self.target_component,
              mavutil.mavlink.MAV_CMD_DO_FENCE_ENABLE, 0,
              do_enable, 0, 0, 0, 0, 0, 0)
docs: Enable or disable fence