code: public void restore(String versionName, boolean removeExisting) throws VersionException, ItemExistsException,
        UnsupportedRepositoryOperationException, LockException, RepositoryException, InvalidItemStateException
     {
        VersionImpl version = (VersionImpl)versionHistory(false).version(versionName, false);
        restore(version, removeExisting);
     }
docs: {@inheritDoc}