https://developer.android.com/reference/kotlin/android/accessibilityservice/BrailleDisplayController.BrailleDisplayCallback
BrailleDisplayController.BrailleDisplayCallback | API reference | Android Developers
api referenceandroiddevelopers
https://developer.android.com/reference/android/accessibilityservice/BrailleDisplayController
BrailleDisplayController | API reference | Android Developers
api referenceandroiddevelopers