Please be more specific.
I don't know how to put anything in app object, and I don't see any example.
Are you trying to say that I put it in gaia_test.py as a property or import it there?
Base app object = base.py? how do you add it to base.py and get app.keyboard.send('...')
I already migrate this from gaia_test.py to a general app class file as other things.