Firefox and Appium

Is there a few lines of code that shows how to start up Firefox browser in an android device. Get it to a certain Url and close the browser. I have searched Google back and forth with no result. A working example.
This is what I have
Android 8, latest of every other things
Cheers
Masse

There is no special Firefox driver for Android. Although, you could try to automate it as any other android native application