protected void doTestInvalidAuthenticator(final boolean multiUser) throws Exception {
    CredentialGenerator gen = new DummyCredentialGenerator();
    Properties extraProps = gen.getSystemProperties();
    Properties javaProps = gen.getJavaProperties();
    String authInit = gen.getAuthInit();

    getLogWriter().info("testInvalidAuthenticator: Using scheme: " + gen.classCode());
    getLogWriter().info("testInvalidAuthenticator: Using authinit: " + authInit);

    // Start the server with invalid authenticator
    server1.invoke(() -> createCacheServer("org.apache.geode.none", extraProps,
        javaProps, AUTHREQ_EXCEPTION));
  }
NOTE: "final boolean multiUser" is unused
geode-core/src/upgradeTest/java/org/apache/geode/security/ClientAuthenticationTestCase.java