Groovy output HTML with MarkupBuilder

htmlbuilder.groovy

import groovy.xml.MarkupBuilder

def sb = new StringWriter()
def html = new MarkupBuilder(sb)

html.doubleQuotes = true
html.expandEmptyElements = true
html.omitEmptyAttributes = false
html.omitNullAttributes = false
html.html {
    head {
        title ('Heading')
        script (src: 'test.js', type: 'text/javascript')
    }
    body {
        mkp.yieldUnescaped('<!--')
        mkp.yield('<test>')
        mkp.yieldUnescaped('-->')

        ul {
            for (def i=0;i<10;i++) {
                li (i)
            }
        }
    }
}

println sb.toString()

​