How to convince groovy.xml.MarkupBuilder to create a node whose name is 'use'

SVG defines an element named use and I am trying to generate an SVG file using groovy.xml.MarkupBuilder that takes advantage of this tag:

http://tutorials.jenkov.com/svg/defs-element.html

def writer = new StringWriter()
def xml = new MarkupBuilder(writer)

xml.svg {
    defs {
        g(id:"shape") {
            rect(x:50, y:50, width:50, height:50)
            circle(cx:50, cy:50, r:50)
        }
    }

    use("xlink:href":"#shape", x:50,  y:50")
}

However use is also a keyword in groovy. How do I escape it correctly?

not sure those methods are official however they work:

v1:

def xml = new groovy.xml.MarkupBuilder()

xml.svg {
    defs {
        g(id:"shape") {
            rect(x:50, y:50, width:50, height:50)
            circle(cx:50, cy:50, r:50)
        }
    }
    createNode('use',["xlink:href":"#shape", x:50,  y:50])
    //nested elements could be here
    nodeCompleted('svg','use')
}

v2:

def xml = new groovy.xml.MarkupBuilder()

xml.svg {
    defs {
        g(id:"shape") {
            rect(x:50, y:50, width:50, height:50)
            circle(cx:50, cy:50, r:50)
        }
    }

    doInvokeMethod('use','use',[["xlink:href":"#shape", x:50,  y:50], { 
        /*nested elements could be here*/ 
    } ])
}

v3:

we could redefine getName method that is responsible to do names mapping or check escaping rules.

@groovy.transform.CompileStatic
class MyMarkupBuilder  extends groovy.xml.MarkupBuilder{
    def getName(String name){
        if(name.startsWith('__'))return name.substring(2)
        return name
    }
}

def xml = new MyMarkupBuilder()

xml.svg {
    defs {
        g(id:"shape") {
            rect(x:50, y:50, width:50, height:50)
            circle(cx:50, cy:50, r:50)
        }
    }
    __use("xlink:href":"#shape", x:50,  y:50)
}