assertFalse(helper2.isEoled());
    }

    public void test_updateConfiguration() {
        assertNotNull(systemHelper.updateConfiguration());
        systemHelper.addUpdateConfigListener("XXX", () -> "OK");
        assertTrue(systemHelper.updateConfiguration().contains("XXX: OK"));
    }

    public void test_isChangedClusterState() {
        systemHelper.isChangedClusterState(0);

                buf.append(ex.getMessage());
            }
            buf.append('\n');
        });
        return buf.toString();
    }

    public void addUpdateConfigListener(final String name, final Supplier<String> listener) {
        updateConfigListenerMap.put(name, listener);
    }

    public boolean isChangedClusterState(final int status) {