DWR request wrapped by Promise

dwrPromise.js

/**
 * Creates promise object for DWR async calls.
 * @param dwrFunc DWR function to be invoked
 * @param arrayOfParameters [optional] parameters of given DWR function
 * @returns {Q.promise}
 */
function qDwr(dwrFunc, arrayOfParameters) {
    var deferred = Q.defer();
    if (arrayOfParameters === undefined || arrayOfParameters === null) {
        arrayOfParameters = [];
    }
    arrayOfParameters.push(function(data) {
        deferred.notify();
        if (data.faulty) {
            deferred.reject(data);
        } else {
            deferred.resolve(data.data);
        }
    });
    dwrFunc.apply(this, arrayOfParameters);
    return deferred.promise;
}

var _provideAgreements = function() {
    Q.all([qDwr(Remote.provideMarketingAgreements),
        qDwr(Remote.provideAdditionalAgreements),
        qDwr(Remote.provideOtherAgreements)])
        .spread(function(marketing, additional, other) {
            function render(agreements, element) {
                var viewData = {
                    "agreements": agreements
                }
                var renderedTemplate = $.Mustache.render(_cfg.id.template.agreements, viewData);
                $(element).html(renderedTemplate);
            }

            render(marketing, _cfg.id.container.marketing);
            render(additional, _cfg.id.container.additional);
            render(other, _cfg.id.container.other);
        })
        .catch(function(error) {
            window.alert(error);
        })
        .done(function() {
            console.log("I'm done");
        });
    }

example for this ?