text: define([
      'knockout'
  ], function (ko) {
      function Article(backend, data) {
          var backend = backend;
  
          data = data || {};
  
          this.url = ko.observable(data.url);
          this.title = ko.observable(data.title);
          this.subheading = ko.observable(data.subheading);
          this.topImageAlt = ko.observable(data.topImageAlt);
          this.topImageSrc = ko.observable(data.topImageSrc);
          this.content = ko.observable(data.content);
          this.shortContent = ko.observable(data.shortContent);
      }
  
      Article.prototype.toData = function () {
          return {
              url: this.url(),
              title: this.title(),
              subheading: this.subheading(),
              topImageAlt: this.topImageAlt(),
              topImageSrc: this.topImageSrc(),
              content: this.content(),
              shortContent: this.shortContent()
          };
      };
  
      return Article;
  });
  