public String getApplicationName() {
        return getApplicationModel().getApplicationName();
    }
@Test
    void getApplicationName() {
        ApplicationModel applicationModel = ApplicationModel.defaultModel();
        String mockMetrics = "MockMetrics";
        applicationModel
                .getApplicationConfigManager()
                .setApplication(new org.apache.dubbo.config.ApplicationConfig(mockMetrics));
        ApplicationMetric applicationMetric = new ApplicationMetric(applicationModel);
        Assertions.assertNotNull(applicationMetric);
        Assertions.assertEquals(mockMetrics, applicationMetric.getApplicationName());
    }