MarkupBuilder builder = new MarkupBuilder(output.getWriter());
builder.setExpandEmptyElements(true);
super.setVariable("html", builder);
// bind forward method
MethodClosure c = new MethodClosure(this, "forward");
super.setVariable("forward", c);
// bind include method
c = new MethodClosure(this, "include");
super.setVariable("include", c);
// bind redirect method
c = new MethodClosure(this, "redirect");
super.setVariable("redirect", c);
}