/**
  * Helper method which returns a proxy instance for a given list of
  * interfaces, using the default classloader and the handler defined
  * in setUp()
  *
  * @param   lang.XPClass[] interfaces
  * @return  lang.reflect.Proxy
  */
 protected function proxyInstanceFor($interfaces)
 {
     return MockProxyBuilder::newProxyInstance(ClassLoader::getDefault(), $interfaces, $this->handler);
 }