docs: public BotSession registerBot(LongPollingBot bot) throws TelegramApiRequestException {
          bot.clearWebhook();
          BotSession session = ApiContext.getInstance(BotSession.class);
          session.setToken(bot.getBotToken());
          session.setOptions(bot.getOptions());
          session.setCallback(bot);
          session.start();
          return session;
      }