code: def cmd_follow(self, args):
          '''control following of vehicle'''
          if len(args) < 2:
              print("map follow 0|1")
              return
          follow = int(args[1])
          self.map.set_follow(followf cmd_follow(self, args):
          '''control following of vehicle'''
          if len(args) < 2:
              print("map follow 0|1")
              return
          follow = int(args[1])
          self.map.set_follow(follow)
docs: control following of vehicle