1. Constructors
  2. DocumentQuality
  3. Values
  4. NO_DOCUMENT
  5. VERY_POOR
  6. POOR
  7. REASONABLE
  8. GOOD
  9. EXCELLENT
  10. Properties
  11. hashCode
  12. index
  13. runtimeType
  14. Methods
  15. noSuchMethod
  16. toString
  17. Operators
  18. operator ==
  19. Constants
  20. values