BITMASK property Null safety

1. printersdk
2. printer_models
3. BluetoothServiceClass
4. BITMASK property

BluetoothServiceClass class

1. Constructors
2. BluetoothServiceClass
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. AUDIO
13. BITMASK
14. CAPTURE
15. INFORMATION
16. LIMITED_DISCOVERABILITY
17. NETWORKING
18. OBJECT_TRANSFER
19. POSITIONING
20. RENDER
21. TELEPHONY