1. Properties
2. hashCode
3. runtimeType
4. Methods
5. acceptInvitation
6. addContact
7. addEventHandler
8. addUserToBlockList
9. clearEventHandlers
10. declineInvitation
11. deleteContact
12. getAllContactsFromDB
13. getAllContactsFromServer
14. getBlockListFromDB
15. getBlockListFromServer
16. getEventHandler
17. getSelfIdsOnOtherPlatform
18. noSuchMethod
19. removeEventHandler
20. removeUserFromBlockList
21. toString
22. Operators
23. operator ==