@Test
    public void test_addUpdateConfigListener_withException() {
        systemHelper.addUpdateConfigListener("TestError", () -> {
            throw new RuntimeException("Test error");
        });
        final String result = systemHelper.updateConfiguration();
        assertTrue(result.contains("TestError:"));
        assertTrue(result.contains("Test error"));
    }

    @Test

                    failureUrl.setId("E" + i);
                    failureUrl.setUrl("http://test.com/" + i + ".html");
                    failureUrl.setErrorCount(i);
                    failureUrl.setErrorName("TestError" + i);
                    list.add(failureUrl);
                }
                return list;
            }
        }, FailureUrlBhv.class.getCanonicalName());