title: isXMLChar for 32 bit Characters
body: <p>I was using <code>XMLReader::isXMLChar</code> (Apache Xerces). But it takes only 16 bit characters (XMLCh). </p>
  
  <pre><code>typedef wchar_t XMLCh;
  </code></pre>
  
  <p>Do we have an alternate Apache Xerces API which takes in 32 bit characters with the same functionality?</p>