@Test
public void clearClassLoaderForSystemClassLoader() throws Exception {
BeanUtils.getPropertyDescriptors(ArrayList.class);
assertTrue(CachedIntrospectionResults.strongClassCache.containsKey(ArrayList.class));
CachedIntrospectionResults.clearClassLoader(ArrayList.class.getClassLoader());
assertFalse(CachedIntrospectionResults.strongClassCache.containsKey(ArrayList.class));
}