*
     * @param serviceName
     *            JAAS configuration name
     */
    public JAASAuthenticator(String serviceName) {
        super(null);
        this.serviceName = serviceName;
    }

    /**
     * Create an authenticator using the given JAAS service and the specified credentials
     *
     * @param serviceName
     *            JAAS configuration name

    private final GSSName serviceName;

    Kerb5Context(String host, String service, String name, int userLifetime, int contextLifetime, String realm) throws GSSException {
        GSSManager manager = GSSManager.getInstance();
        GSSCredential clientCreds = null;
        Oid mechOid = JGSS_KRB5_MECH_OID;
        if (realm != null) {

        // Setup mock behavior for GSSManager with lenient matchers
        lenient().when(gssManager.createName(anyString(), any(), any())).thenReturn(serviceName);
        lenient().when(gssManager.createName(anyString(), any())).thenReturn(serviceName);
        lenient().when(gssManager.createContext(any(), any(), any(), anyInt())).thenReturn(gssContext);

        // Create Kerb5Context with mocked dependencies

   * debugging output.
   *
   * @since 14.0
   */
  protected String serviceName() {
    return getClass().getSimpleName();
  }

  @Override
  public String toString() {
    return serviceName() + " [" + state() + "]";
  }

  @Override
  public final boolean isRunning() {
    return delegate.isRunning();
  }

  @Override

        switch (variant) {
        case DEFAULT_WITH_PS: {
            JAASAuthenticator a = new JAASAuthenticator();
            // Provide a preset Subject so the getSubject() path uses the (serviceName, ps, this) constructor
            a.setSubject(new Subject());
            return a;
        }
        case WITH_CONFIG: {
            // Use the constructor that sets a StaticJAASConfiguration to exercise that branch

   * debugging output.
   *
   * @since 14.0
   */
  protected String serviceName() {
    return getClass().getSimpleName();
  }

  @Override
  public String toString() {
    return serviceName() + " [" + state() + "]";
  }

  @Override
  public final boolean isRunning() {
    return delegate.isRunning();
  }

  @Override

- Validation now requires new StatefulSets with a `.spec.serviceName` field value to pass DNS1123 validation. Previously created StatefulSets with an invalid `.spec.serviceName` field value could not create any pods, and should be deleted.