Merge "Do not execute fingerDown command if there is no existing HAL session" into main

    public void simulateVhalFingerDown(int userId, int sensorId) {

        Slog.d(getTag(), "Simulate virtual HAL finger down event");

        final AidlSession session = mFingerprintSensors.get(sensorId).getSessionForUser(userId);

        if (session == null) {

            Slog.e(getTag(), "no existing hal session found - aborting");

            return;

        }

        final PointerContext pc = new PointerContext();

        try {

            session.getSession().onPointerDownWithContext(pc);