BluetoothDeviceMajorClass constructor Null safety

1. printersdk
2. printer_models
3. BluetoothDeviceMajorClass
4. BluetoothDeviceMajorClass constructor

BluetoothDeviceMajorClass class

1. Constructors
2. BluetoothDeviceMajorClass
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. AUDIO_VIDEO
13. BITMASK
14. COMPUTER
15. HEALTH
16. IMAGING
17. MISC
18. NETWORKING
19. PERIPHERAL
20. PHONE
21. TOY
22. UNCATEGORIZED
23. WEARABLE