rhandler.endPrefixMapping(getPrefix());
  public void execute(          TransformerImpl transformer)            throws TransformerException  {    try    {      ResultTreeHandler rhandler = transformer.getResultTreeHandler();      // Add namespace declarations.			// JJK ISSUE: Need to make sure extensionElementURIs asserted here...			// and passed downward to contained LREs. (Regression LRE21)			// This method is inherited; I think that means we either subclass it or			// pre-apply this flag to the declarations. 			// ISSUE: Needs to be inherited downward, which means it's a real scoped			// change in the state of the namespace declaration.      // gonk();      executeNSDecls(transformer);      rhandler.startElement(getNamespace(), getLocalName(), getRawName(), null);      try      {        // Process any possible attributes from xsl:use-attribute-sets first        super.execute(transformer);        //xsl:version, excludeResultPrefixes???        // Process the list of avts next        if (null != m_avts)        {          int nAttrs = m_avts.size();          for (int i = (nAttrs - 1); i >= 0; i--)          {            AVT avt = (AVT) m_avts.elementAt(i);            XPathContext xctxt = transformer.getXPathContext();            int sourceNode = xctxt.getCurrentNode();            String stringedValue = avt.evaluate(xctxt, sourceNode, this);            if (null != stringedValue)            {              // Important Note: I'm not going to check for excluded namespace               // prefixes here.  It seems like it's too expensive, and I'm not               // even sure this is right.  But I could be wrong, so this needs               // to be tested against other implementations.							              rhandler.addAttribute(avt.getURI(), avt.getName(),                                    avt.getRawName(), "CDATA", stringedValue);            }          }  // end for        }        // Now process all the elements in this subtree        // TODO: Process m_extensionElementPrefixes && m_attributeSetsNames        transformer.executeChildTemplates(this, true);      }      finally      {        // If you don't do this in a finally statement, an exception could         // cause a system hang.        rhandler.endElement(getNamespace(), getLocalName(), getRawName());        unexecuteNSDecls(transformer);      }    }    catch (org.xml.sax.SAXException se)    {      throw new TransformerException(se);    }  }