FormFieldState class

1. Constructors
2. FormFieldState
3. Properties
4. errorText
5. hasError
6. value
7. context
8. hashCode
9. mounted
10. runtimeType
11. widget
12. Methods
13. build
14. deactivate
15. didChange
16. initState
17. reset
18. save
19. setValue
20. validate
21. debugFillProperties
22. didChangeDependencies
23. didUpdateWidget
24. dispose
25. noSuchMethod
26. reassemble
27. setState
28. toDiagnosticsNode
29. toString
30. toStringShort
31. Operators
32. operator ==