code: public WelcomeFileListType<T> welcomeFile(String ... values)
     {
        if (values != null)
        {
           for(String name: values)
           {
              childNode.createChild("welcome-file").text(name);
           }
        }
        return this;
     }
docs: Creates for all String objects representing <code>welcome-file</code> elements,
  a new <code>welcome-file</code> element
  @param values list of <code>welcome-file</code> objects
  @return the current instance of <code>WelcomeFileListType<T></code>