code: function mergeUrlWithParams(url, params) {
          params = params || {};
          return _.isEmpty(params) ? url : url + "?" + qs.stringify(params);
      }
docs: Method will add params to the specified url
  
  @param {String} url
  @param {Object=} params - optional, object with parameters that should be merged with specified url
  @returns {String}
  @protected