XML StreamingMarkupBuilder

import groovy.xml.StreamingMarkupBuilder

Map props = [addressid:'1', line1:'line-1_VALUE', line2:'line-2_VALUE']

def builder = new StreamingMarkupBuilder()

def address = {
     "address"(id: props.addressid) {
         "line-1"(props.line1)
         "line-2"(props.line2)
         "city"("city_VALUE") // typing wimped out...
         "state"("State_VALUE")
         "postal-code"("postal_VALUE")
     }
}

println builder.bind(address).toString() // something XML-compatible <address id="1">
...</address>