Capabilities constructor Null safety

1. Flutter
2. webdriver.sync_io
3. Capabilities
4. Capabilities constructor

Capabilities class

1. Constructors
2. Capabilities
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. android
13. chrome
14. empty
15. firefox
16. Constants
17. acceptInsecureCerts
18. acceptSslCerts
19. browserName
20. browserVersion
21. chromeOptions
22. enableProfiling
23. firefoxOptions
24. hasNativeEvents
25. loggingPrefs
26. pageLoadStrategy
27. platformName
28. proxy
29. rotatable
30. setWindowRect
31. supportsAlerts
32. supportsApplicationCache
33. supportsBrowserConnection
34. supportsFindingByCss
35. supportsLocationContext
36. supportSqlDatabase
37. supportsWebStorage
38. takesScreenshot
39. timeouts
40. unexpectedAlertBehaviour
41. unhandledPromptBehavior