public <T> T getInterface(Object thiz, Class<T> iface) throws ScriptException {
if (iface == null || !iface.isInterface()) {
throw new IllegalArgumentException("interface Class expected");
}
AccessControlContext accCtxt = AccessController.getContext();
return iface.cast(
Proxy.newProxyInstance(
iface.getClassLoader(),
new Class[] {iface},
new InterfaceImplementorInvocationHandler(thiz, accCtxt)));
}
