requestProvisionalPermission property
Request permission to send provisional notification for iOS 12+
Subject to specific approval from Apple: https://developer.apple.com/documentation/usernotifications/asking_permission_to_use_notifications#3544375
Default value is false.
On iOS, this property is only applicable to iOS 12 or newer. On macOS, this property is only applicable to macOS 10.14 or newer.
Implementation
final bool requestProvisionalPermission;