code: function validateBotApi (botFactory, postBackTest, textTest, acl) {
      /** @deprecated way to validate bot */
      if (postBackTest && typeof postBackTest === 'object') {
  
          // @ts-ignore
          return validate(botFactory, postBackTest, textTest, acl)
              .then((res) => {
                  if (!res.ok) {
                      throw new Error(res.error);
                  }
              });
      }
  
      return {
          async validateBot (args, ctx) {
              if (!apiAuthorizer(args, ctx, acl)) {
                  return null;
              }
  
              const validationRequestBody = args.bot;
  
              const bot = botFactory();
  
              return validate(bot, validationRequestBody, postBackTest, textTest);
          }
      };
  }
docs: Test the bot configuration
  
  @param {Function} botFactory - function, which returns a bot
  @param {string|null} [postBackTest] - postback action to test
  @param {string|null} [textTest] - random text to test
  @param {string[]|Function} [acl] - limit api to array of groups or use auth function
  @returns {ValidateBotAPI}
  @example
  const { GraphApi, validateBotApi } = require('wingbot');
  
  const api = new GraphApi([
  validateBotApi(botFactory, 'start', 'hello')
  ], {
  token: 'wingbot-token'
  })