PostDataModel constructor Null safety

1. f_redditech
2. qwiddo
3. PostDataModel
4. PostDataModel constructor

PostDataModel class

1. Constructors
2. PostDataModel
3. Properties
4. categoryType
5. fetchedCategory
6. hashCode
7. hasListeners
8. postTilesList
9. runtimeType
10. Methods
11. addListener
12. addPostListToList
13. addPostTileInList
14. changeCategory
15. clearPostTileList
16. dispose
17. getLastFetchedItem
18. noSuchMethod
19. notifyListeners
20. removeListener
21. setPostList
22. toString
23. Operators
24. operator ==