code: @Test public void testMultiple(){
    context.register(DubboConfigConfiguration.Multiple.class);
    context.refresh();
    ApplicationConfig applicationConfig=context.getBean("applicationBean",ApplicationConfig.class);
    Assert.assertEquals("dubbo-demo-application",applicationConfig.getName());
    ApplicationConfig applicationBean2=context.getBean("applicationBean2",ApplicationConfig.class);
    Assert.assertEquals("dubbo-demo-application2",applicationBean2.getName());
    ApplicationConfig applicationBean3=context.getBean("applicationBean3",ApplicationConfig.class);
    Assert.assertEquals("dubbo-demo-application3",applicationBean3.getName());
  }
  