*  @param ns a list of namespaces to filter by, empty = all namespaces.
     *  @return the list of pages linking to the specified page
     *  @throws IOException if a network error occurs
     *  @since 0.10
     */
    public String[] whatLinksHere(String title, int... ns) throws IOException
    {
        return whatLinksHere(title, false, ns);
    }