@Mock
    private Subject subject;

    @Mock
    private KerberosKey key1;

    @Mock
    private KerberosKey key2;

    private static final String LOGIN_CONTEXT_NAME = "TestLoginContext";
    private static final int KEY_TYPE_1 = 1;
    private static final int KEY_TYPE_2 = 2;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    /**