}

    @Override
    public void refresh() throws CIFSException {
        // custom Kerb5Authenticators need to override this method for support
        throw new SmbUnsupportedOperationException("Refreshing credentials is not supported by this authenticator");
    }

    @Override
    public Kerb5Authenticator clone() {
        Kerb5Authenticator auth = new Kerb5Authenticator(getSubject());

				lockRefreshed++
			} else {
				lockNotFound++
			}
			if lockRefreshed >= quorum || lockNotFound > len(restClnts)-quorum {
				done = true
			}
		case <-ctx.Done():
			// Refreshing is canceled
			return false, ctx.Err()
		}
		if done {
			break
		}
	}

	// We may have some unused results in ch, release them async.
	go func() {
		wg.Wait()
		xioutil.SafeClose(ch)