code: function previewHealthData() {
          var result = new $.Deferred();
  
          HealthDataManager.getHealthData().done(function (healthDataObject) {
              var combinedHealthAnalyticsData = HealthDataManager.getAnalyticsData(),
                  content;
              combinedHealthAnalyticsData = [healthDataObject, combinedHealthAnalyticsData ];
              content = JSON.stringify(combinedHealthAnalyticsData, null, 4);
              content = _.escape(content);
              content = content.replace(/ /g, "&nbsp;");
              content = content.replace(/(?:\r\n|\r|\n)/g, "<br />");
  
              var hdPref   = prefs.get("healthDataTracking"),
                  template = Mustache.render(HealthDataPreviewDialog, {Strings: Strings, content: content, hdPref: hdPref}),
                  $template = $(template);
  
              Dialogs.addLinkTooltips($template);
  
              Dialogs.showModalDialogUsingTemplate($template).done(function (id) {
  
                  if (id === "save") {
                      var newHDPref = $template.find("[data-target]:checkbox").is(":checked");
                      if (hdPref !== newHDPref) {
                          prefs.set("healthDataTracking", newHDPref);
                      }
                  }
              });
  
              return result.resolve();
          });
  
          return result.promise();
      }
docs: Show the dialog for previewing the Health Data that will be sent.