code: AVT processAVT(
            StylesheetHandler handler, String uri, String name, String rawName, String value,
            ElemTemplateElement owner)
              throws org.xml.sax.SAXException
    {
  
      try
      {
        AVT avt = new AVT(handler, uri, name, rawName, value, owner);
  
        return avt;
      }
      catch (TransformerException te)
      {
        throw new org.xml.sax.SAXException(te);
      }
    }
docs: Process an attribute string of type T_AVT into
  a AVT value.
  
  @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
  @param uri The Namespace URI, or an empty string.
  @param name The local name (without prefix), or empty string if not namespace processing.
  @param rawName The qualified name (with prefix).
  @param value Should be an Attribute Value Template string.
  
  @return An AVT object that may be used to evaluate the Attribute Value Template.
  
  @throws org.xml.sax.SAXException which will wrap a
  {@link javax.xml.transform.TransformerException}, if there is a syntax error
  in the attribute value template string.