dispose method
Will clear used resources
Implementation
Future<void> dispose() => Future.wait([
_provisioningController.close(),
_provisioningCapabilitiesController.close(),
_provisioningInvitationController.close(),
_provisioningReconnectController.close(),
_onConfigCompositionDataStatusController.close(),
_onConfigAppKeyStatusController.close(),
_provisioningGattErrorController.close(),
]);