public static String buildAppAuthPath(final String appKey) {
        return String.join(PATH_SEPARATOR, APP_AUTH_PARENT, appKey);
    }
@Test
    public void testBuildAppAuthPath() {
        String appKey = RandomStringUtils.randomAlphanumeric(10);
        String appAuthPath = DefaultPathConstants.buildAppAuthPath(appKey);
        assertThat(appAuthPath, notNullValue());
        assertThat(String.join(SEPARATOR, APP_AUTH_PARENT, appKey), equalTo(appAuthPath));
    }