code: public Object getUserData(String key) {
  	// dynamic load to support jre 1.4 and 1.5
  	try {
  	    Method m = node.getClass().getMethod("getUserData", new Class[] { key.getClass() });
  	    return m.invoke(node, new Object[] { key });
  	}
  	catch (Exception e) {
  	    throw new PageRuntimeException(Caster.toPageException(e));
  	}
      }
docs: used only with java 7, do not set @Override