In order to be able to navigate through the application by automated tests, we need to ensure that uiautomator path to the significant elements is unique. Other ways of navigation are not reliable and fast enough.

For instance here:
https://github.com/aerogear/aerogear-push-helloworld/blob/master/ios/HelloWorld/AGViewController.m#L74-L87

UIAutomator path can be identified by Appium tooling:
https://github.com/appium/appium/blob/master/docs/en/finding-elements.md