1. Dart
2. dart:html
3. CssClassSet
4. frozen property

##### CssClassSet class

1. Constructors
2. CssClassSet
3. Properties
4. frozen
5. first
6. hashCode
7. isEmpty
8. isNotEmpty
9. iterator
10. last
11. length
12. runtimeType
13. single
14. Methods
15. add
16. addAll
17. contains
18. remove
19. removeAll
20. toggle
21. toggleAll
22. any
23. cast
24. clear
25. containsAll
26. difference
27. elementAt
28. every
29. expand
30. firstWhere
31. fold
32. followedBy
33. forEach
34. intersection
35. join
36. lastWhere
37. lookup
38. map
39. noSuchMethod
40. reduce
41. removeWhere
42. retainAll
43. retainWhere
44. singleWhere
45. skip
46. skipWhile
47. take
48. takeWhile
49. toList
50. toSet
51. toString
52. union
53. where
54. whereType
55. Operators
56. operator ==

# frozen property

bool frozen

Returns `true` if classes cannot be added or removed from this `CssClassSet`.

## Implementation

    bool get frozen;