1. Constructors
  2. new
  3. Properties
  4. hashCode
  5. runtimeType
  6. Methods
  7. noSuchMethod
  8. toString
  9. Operators
  10. operator ==
  11. Static methods
  12. custom
  13. email
  14. max
  15. maxLength
  16. min
  17. minLength
  18. pattern
  19. required