Outdated docstrings?

Looking at the documentation of castellan.key_manager.key_manager.KeyManager.delete, it seems that this method can raise the following exceptions: NotAuthorized and KeyError.

Its Barbican implementation may raise KeyManagerError or ManagedObjectNotFoundError.

Its Vault implementation may raise Forbidden or KeyManagerError (for a different reason than its Barbican counterpart) or ManagedObjectNotFoundError.

This happens for other methods of the same class (get, list...) and prevents the user from knowing what exceptions to expect when using them.