MissingMethodException in Builder is misleading

class Foo extends BuilderSupport {
    public void setParent(Object parent, Object child){
        parent.setFoo(child)
    }
    public Object createNode(Object name){
        return createNode(name,(Object)null)
    }
    
    public Object createNode(Object name, Object value){
        return createNode(name,[:],value)
    }
    
    public Object createNode(Object name, Map attributes){
        return createNode(name,attributes,null)
    }
    
    public Object createNode(Object name, Map attributes, Object value){
      return "${name}"      
    }

}

try {
  def f = new Foo()
  f.foo {
    bar()
  }
} catch(MissingMethodException e) {
  assert e.method == "setFoo",  "was ${e.method}"
}