}

    @AfterEach
    public void tearDown() throws IOException {
        if (manager != null) {
            manager.shutdown();
        }

        // Clean up system property
        System.clearProperty("jcifs.smb.client.handleStateDirectory");

        // Clean up temp directory
        if (tempDir != null && Files.exists(tempDir)) {
            Files.walk(tempDir)

     * @return CURL request object or null if header is invalid
     */
    private CurlRequest getCurlRequest(final String header) {
        if (StringUtil.isBlank(header)) {
            return null;
        }

        final String[] values = header.split(" ");
        if (values.length != 2) {
            return null;
        }

        final String path;

        verifyNoMoreInteractions(renewable);
    }

    @Test
    @DisplayName("Edge: calling renew() on a null reference throws NPE")
    void renewOnNullReferenceThrowsNPE() {
        // Arrange: null reference to the interface
        SmbRenewableCredentials creds = null;

        // Act + Assert: invoking renew() on null triggers NullPointerException
        assertThrows(NullPointerException.class, () -> {

     * @return the transformed tests
     */
    public List<ObjectNode> transformRestTests(LinkedList<ObjectNode> tests, List<RestTestTransform<?>> transformations) {
        ObjectNode setupSection = null;
        ObjectNode teardownSection = null;

        // Collect any global setup transformations
        List<RestTestTransformGlobalSetup> setupTransforms = transformations.stream()

  /**
   * The reason why this stream was closed, or null if it closed normally or has not yet been
   * closed.
   *
   * If there are multiple reasons to abnormally close this stream (such as both peers closing it
   * near-simultaneously) then this is the first reason known to this peer.
   */
  internal var errorCode: ErrorCode? = null
    get() = withLock { field }

   *     for the keys
   */
  @CanIgnoreReturnValue
  public @Nullable V erase(@Nullable Object rowKey, @Nullable Object columnKey) {
    Integer rowIndex = rowKeyToIndex.get(rowKey);
    Integer columnIndex = columnKeyToIndex.get(columnKey);
    if (rowIndex == null || columnIndex == null) {
      return null;
    }

    if (result != null) {
      return result;
    } else {
      return defaultValue;
    }
  }

  private transient @Nullable ImmutableSet<Entry<K, V>> cachedEntrySet = null;

  @Override
  public final ImmutableSet<Entry<K, V>> entrySet() {
    if (cachedEntrySet != null) {
      return cachedEntrySet;
    }

    public void test_maskSensitiveValue_nullHandling() {
        // When key is null, cannot determine if sensitive, so return value as-is
        assertEquals("value", SystemUtil.maskSensitiveValue(null, "value"));
        // When value is null, return null
        assertNull(SystemUtil.maskSensitiveValue("key", null));
        assertNull(SystemUtil.maskSensitiveValue(null, null));
    }

    @Test

     */
    protected static DcerpcBinding parseBinding(final String str) throws DcerpcException {
        int state, mark, si;
        final char[] arr = str.toCharArray();
        String proto = null, key = null;
        DcerpcBinding binding = null;

        state = mark = si = 0;
        do {
            final char ch = arr[si];

            switch (state) {
            case 0:
                if (ch == ':') {

        repos.add(artifactRepositoryFactory.createArtifactRepository(
                "repo1", "string://url1", new ArtifactRepositoryLayoutStub(), null, null));
        repos.add(artifactRepositoryFactory.createArtifactRepository(
                "repo2", "string://url2", new ArtifactRepositoryLayoutStub(), null, null));

        StringWagon wagon = (StringWagon) wagonManager.getWagon("string");