public void testInvoke2() throws Exception {
   MockInterceptor mi = new MockInterceptor("Hello");
   Aspect aspect = new AspectImpl(mi);
   AopProxy aopProxy = new AopProxy(Hello2.class, new Aspect[] {aspect});
   Hello2 hello = (Hello2) aopProxy.create();
   assertEquals("1", "Hello", hello.echo("hoge"));
   assertEquals("2", true, mi.isInvoked("echo"));
   assertEquals("3", false, mi.isInvoked("greeting"));
   assertEquals("4", "hoge", mi.getArgs("echo")[0]);
 }