1. Constructors
  2. ChildBackButtonDispatcher
  3. Properties
  4. hasCallbacks
  5. hashCode
  6. parent
  7. runtimeType
  8. Methods
  9. addCallback
  10. createChildBackButtonDispatcher
  11. deferTo
  12. forget
  13. invokeCallback
  14. noSuchMethod
  15. notifiedByParent
  16. removeCallback
  17. takePriority
  18. toString
  19. Operators
  20. operator ==