How to use Appium and AppCenter with RN application?

I have a RN app (iOS/Android).
Appcenter.ms needs tests written with Java language.
How to add Appium support to RN app?

I don’t have pom.xml file like mentioned here:

-> mvn verify
[INFO] Scanning for projects…
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.067 s
[INFO] Finished at: 2021-03-29T14:57:59+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] The goal you specified requires a project to execute but there is no POM in this directory

But React Native app doesn’t have POM.

How to configure it?