1. Constructors
2. new
3. Properties
4. description
5. hashCode
6. items
7. key
8. onClose
9. onSave
10. runtimeType
11. title
12. variant
13. Methods
14. asFocusable ^(ext)
15. asSemanticButton ^(ext)
16. asSemanticHeading ^(ext)
17. createElement
18. createState
19. debugDescribeChildren
20. debugFillProperties
21. excludeFromSemantics ^(ext)
22. mergeSemantics ^(ext)
23. noSuchMethod
24. toDiagnosticsNode
25. toString
26. toStringDeep
27. toStringShallow
28. toStringShort
29. withSemanticLabel ^(ext)
30. Operators
31. operator ==