IPagination<T, S extends MessageBuilder> constructor Null safety

1. nyxx_pagination
2. nyxx_pagination
3. IPagination<T, S extends MessageBuilder>
4. IPagination constructor

IPagination class

1. Constructors
2. IPagination
3. Properties
4. currentPage
5. hashCode
6. maxPage
7. runtimeType
8. Methods
9. getMessageBuilderForPage
10. initMessageBuilder
11. noSuchMethod
12. onFirstPageButtonClicked
13. onLastPageButtonClicked
14. onNextPageButtonClicked
15. onPreviousPageButtonClicked
16. toString
17. updatePage
18. Operators
19. operator ==