This is the repository to which the PendingChangesets are committed. It can be one of the following kinds:

1. ArxRepository
2. BzrngRepository
3. CodevilleRepository?
4. CogitoRepository
5. CvsRepository
6. CvspsRepository
7. GitRepository
8. DarcsRepository
9. MercurialRepository
10. MonotoneRepository
11. SubversionRepository?