additionnal_arguments.js

var myWrapper = function(path, caller, handler) {
  

  if (arguments > 3) {
    var additionnal_arguments = arguments.slice(4);
  }

  // The 'notify()' call could take a variable number of args passed along to the "handler" callback
  // My goal was to give it "additionnal_arguments" content ...

  SC.Request.getUrl('/static_part' + path + '?lang=' + MyApp.lang)
            .notify(caller, handler)
            .send();

}