public void testSetDescriptionOnNonExistentGroupThrows() throws Exception {
        final DefaultGroupProvider provider = new DefaultGroupProvider();
        provider.createGroup("Test Group A");

        assertThrows(GroupNotFoundException.class, () -> provider.setDescription("Test Group B", "Some Description"));
    }
Verifies that {@link DefaultGroupProvider#setDescription(String, String)} throws a {@link GroupNotFoundException}
when attempting to set the description of a group by a name that does not exist
xmppserver/src/test/java/org/jivesoftware/openfire/group/DefaultGroupProviderTest.java