text: // >> action-bar-basic-usage-sdk-js
  const frameModule = require("tns-core-modules/ui/frame");
  
  function goBack() {
      frameModule.Frame.topmost().goBack();
  }
  function openSettings() {
      // implement the custom logic
  }
  exports.goBack = goBack;
  exports.openSettings = openSettings;
  // << action-bar-basic-usage-sdk-js
  