// Create a chain of operations
            assertDoesNotThrow(() -> {
                impl.fixupHost("server1.example.com");
                impl.fixupDomain("domain.com");
                impl.fixupHost("server2.example.com");
                impl.fixupDomain("otherdomain.com");
            });
        }

        @Test
        @DisplayName("Should handle linked list of referrals")