Platform constructor Null safety

1. Dart
2. dart:io
3. Platform
4. Platform constructor

Platform class

1. Constructors
2. Platform
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. environment
13. executable
14. executableArguments
15. isAndroid
16. isFuchsia
17. isIOS
18. isLinux
19. isMacOS
20. isWindows
21. localeName
22. localHostname
23. numberOfProcessors
24. operatingSystem
25. operatingSystemVersion
26. packageConfig
27. pathSeparator
28. resolvedExecutable
29. script
30. version