1. Constructors
  2. UndoHistory
  3. Properties
  4. child
  5. controller
  6. focusNode
  7. hashCode
  8. key
  9. onTriggered
  10. runtimeType
  11. shouldChangeUndoStack
  12. undoStackModifier
  13. value
  14. Methods
  15. createElement
  16. createState
  17. debugDescribeChildren
  18. debugFillProperties
  19. noSuchMethod
  20. toDiagnosticsNode
  21. toString
  22. toStringDeep
  23. toStringShallow
  24. toStringShort
  25. Operators
  26. operator ==