docs: function validateParams(connections, options, appConfig, paramsList, cb) {
      var validate = validation(appConfig);
      async.series([
        function(cb) {
          paramsList.push(cb);
          validate.has.apply(validate, paramsList);
        },
        function(cb) {
          groups.validateAppAllowedForUser(connections, options.restrictToUser, appConfig.appId, cb);
        }
      ], cb);
    }