step_definition.js

this.Given(/^I am doing something$/, function (callback) {
        var browser = this.browser;
        browser
            .visit(this.home)
            .then(function () {
                browser.clickLink("Link Name")
                    .then(function () {
                        callback();
                    }).fail(function (e) {
                        callback.fail("Unable to click on Link Name", e);
                    });
            })
            .fail(function (e) {
                callback.fail(e);
            });

    });