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