code: public static IsProperties create(String s, boolean fixJson) {
      return getFactory().create(fixJson ? Properties.wrapPropertiesString(s) : s);
    }
docs: Create an instance of IsProperties, a Properties JavaScriptObject in the client
  side and a proxy object in the JVM.
  
  If fixJson is set, we correct certain errors in the Json string. It is useful
  for generating Properties using java strings, so as we can use a more relaxed
  syntax.