Change Details

- [ ] Verify test coverage for Updater - [ ] Create E2E test - [ ] Review previous tests ( remove duplicated cases) - [ ] Drop dependencies on real resources in integration tests - [ ] Rework wikibase integration test

- [ ] Verify test coverage for Updater - [ ] Create E2E test - [ ] Review previous tests ( remove duplicated cases) - [ ] Drop dependencies on real resources in integration tests - [ ] Rework wikibase integration test Will be done for the streaming updater.

- [ ] Verify test coverage for Updater - [ ] Create E2E test - [ ] Review previous tests ( remove duplicated cases) - [ ] Drop dependencies on real resources in integration tests - [ ] Rework wikibase integration test Will be done for the streaming updater.