@Test
 public void testInterceptorClass() throws Exception {
   TestDescriptorImpl provider = new TestDescriptorImpl("test");
   InterceptorType<TestDescriptorImpl> type =
       new InterceptorTypeImpl<TestDescriptorImpl>(
           provider, "interceptorType", provider.getRootNode());
   type.setInterceptorClass("test");
   assertEquals(type.getInterceptorClass(), "test");
   type.removeInterceptorClass();
   assertNull(type.getInterceptorClass());
 }