Link constructor Null safety

1. Flutter
2. file
3. Link
4. Link constructor

Link class

1. Constructors
2. Link
3. Properties
4. absolute
5. basename
6. dirname
7. fileSystem
8. hashCode
9. isAbsolute
10. parent
11. path
12. runtimeType
13. uri
14. Methods
15. create
16. createSync
17. delete
18. deleteSync
19. exists
20. existsSync
21. noSuchMethod
22. rename
23. renameSync
24. resolveSymbolicLinks
25. resolveSymbolicLinksSync
26. stat
27. statSync
28. target
29. targetSync
30. toString
31. update
32. updateSync
33. watch
34. Operators
35. operator ==