PlatformViewController constructor Null safety

1. Flutter
2. services
3. PlatformViewController
4. PlatformViewController constructor

PlatformViewController class

1. Constructors
2. PlatformViewController
3. Properties
4. hashCode
5. runtimeType
6. viewId
7. Methods
8. clearFocus
9. create
10. dispatchPointerEvent
11. dispose
12. noSuchMethod
13. toString
14. Operators
15. operator ==