1. Properties
  2. badInput
  3. customError
  4. hashCode
  5. patternMismatch
  6. rangeOverflow
  7. rangeUnderflow
  8. runtimeType
  9. stepMismatch
  10. tooLong
  11. tooShort
  12. typeMismatch
  13. valid
  14. valueMissing
  15. Methods
  16. noSuchMethod
  17. toString
  18. Operators
  19. operator ==