docs: function _validateConfig(config) {
      for (var i = 0; i < REQUIRED_CONFIG_VARIABLES.length; i++) {
          var key = REQUIRED_CONFIG_VARIABLES[i];
          var value = config.DubBotBase[key];
          if (!value || value === "UNSET") {
              throw new Error("No value has been set in config for key: DubBotBase." + key);
          }
      }
  }