BackupDataSource
constructor(selfUserId: <Error class: unknown class>, userDAO: <Error class: unknown class>, messageDAO: <Error class: unknown class>, conversationDAO: <Error class: unknown class>, reactionDAO: <Error class: unknown class>, userMapper: UserMapper = userMapper(), conversationMapper: ConversationMapper = conversationMapper(selfUserId), messageMapper: MessageMapper = messageMapper(selfUserId), idMapper: <Error class: unknown class> = MapperProvider.idMapper())