StreamingMarkupBuilder for Groovy-er xml

import groovy.xml.StreamingMarkupBuilder

def inputs = ['FirstName', 'LastName', 'Street', 'City', 'Country']
def controller = 'formController'
def bean = 'formBean'

def builder = new StreamingMarkupBuilder()
builder.encoding = "UTF-8"
def doc = builder.bind {
    mkp.xmlDeclaration()
    mkp.declareNamespace(ui: "http://java.sun.com/jsf/facelets",
            h: "http://java.sun.com/jsf/html")
    'ui:composition'(template: '/layout/main.xhtml') {
        'h:form'(id: "${controller}_form") {
            inputs.each {input ->
                def inputId = input.toLowerCase().replaceAll(' ', '')
                'h:outputLabel'(input, id: inputId, styleClass: 'inputlabel')
                'h:inputText'(id: "${inputId}_input", value: "${bean}_$inputId", styleClass: 'inputText')
            }
        }
        'h:commandButton'(id: "${controller}_submit", action: "#{${controller}.submit}", styleClass: "submitButton",
                value: 'Submit')
    }
}