1. Dart
2. dart:collection
3. Queue<E>
4. addFirst abstract method

Queue class

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

void addFirst(E value);