1. Constructors
  2. FormData
  3. Properties
  4. hashCode
  5. runtimeType
  6. Methods
  7. append
  8. appendBlob
  9. delete
  10. get
  11. getAll
  12. has
  13. noSuchMethod
  14. set
  15. toString
  16. Operators
  17. operator ==
  18. Static properties
  19. supported