plyer.vibrator.exists() throws NotImplementedError on Linux, should return False?

[fovea1959]

I am writing a Kivy multiplatform app (Android and Linux). I am trying to deal with the possible lack of a vibrator by guarding the call to .vibrate() with an .exists() check.

        if plyer.vibrator.exists():
            plyer.vibrator.vibrate()

plyer.vibrate.exists() currently throws a NotImplementedError on Linux.

 Traceback (most recent call last):
   File "/home/wegscd/.virtualenvs/KivyTest/lib/python3.8/site-packages/plyer/utils.py", line 93, in _ensure_obj
     mod = __import__(module, fromlist='.')
 ModuleNotFoundError: No module named 'plyer.platforms.linux.vibrator'
 Traceback (most recent call last):
   File "/home/wegscd/PycharmProjects/KivyTest/main.py", line 208, in <module>
     TabbedPanelApp().run()
   File "/home/wegscd/.virtualenvs/KivyTest/lib/python3.8/site-packages/kivy/app.py", line 954, in run
     self._run_prepare()
   File "/home/wegscd/.virtualenvs/KivyTest/lib/python3.8/site-packages/kivy/app.py", line 924, in _run_prepare
     root = self.build()
   File "/home/wegscd/PycharmProjects/KivyTest/main.py", line 204, in build
     return MainWidget()
   File "/home/wegscd/PycharmProjects/KivyTest/main.py", line 198, in __init__
     if plyer.vibrator.exists():
   File "/home/wegscd/.virtualenvs/KivyTest/lib/python3.8/site-packages/plyer/facades/vibrator.py", line 77, in exists
     return self._exists()
   File "/home/wegscd/.virtualenvs/KivyTest/lib/python3.8/site-packages/plyer/facades/vibrator.py", line 94, in _exists
     raise NotImplementedError()
 NotImplementedError

I would submit that it should just return False?

I am willing to write the implementation if the team is amenable to accepting it. I just tested this with plyer 2.1.0 and Kivy 2.1.0.

[fovea1959]

Patch for 2.1.0 is attached; returns False for .exists() instead of raising NotImplementedError(). I don't have a patch for iOS; I don't understand how it's .exists() works.

plyer.vibrator.patch.txt