Part of lp.bugs.externalbugtracker
| Class | BugTrackerAuthenticationError | Launchpad couldn't authenticate with the remote bugtracker. |
| Class | UnknownRemoteValueError | A matching Launchpad value could not be found for the remote value. |
| Class | UnknownRemoteImportanceError | The remote bug's importance isn't mapped to a BugTaskImportance. |
| Function | repost_on_redirect_hook | Undocumented |
| Class | LookupBranch | A lookup branch customised for documenting external bug trackers. |