public override void EnterBotToDest(BotsScriptParser.BotToDestContext context)
        {
            var botId = context.bot().id.Text;

            var destLower  = ParseDest(context.dest(0));
            var destHigher = ParseDest(context.dest(1));

            var bot = _playground.GetBot(int.Parse(botId));

            _botsTasks.Add(new BotToDistsTask(bot, destLower, destHigher));
        }
 /// <summary>
 /// Exit a parse tree produced by <see cref="BotsScriptParser.botToDest"/>.
 /// <para>The default implementation does nothing.</para>
 /// </summary>
 /// <param name="context">The parse tree.</param>
 public virtual void ExitBotToDest([NotNull] BotsScriptParser.BotToDestContext context)
 {
 }