* @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()

   *     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;
    }

                    it.set(MavenPropertiesLoader.substVars(it.next(), null, null, callback));
                }
            }
            commandLineBuilder.addOption(option);
        }
        for (String arg : cliRequest.commandLine.getArgList()) {
            commandLineBuilder.addArg(MavenPropertiesLoader.substVars(arg, null, null, callback));
        }
        cliRequest.commandLine = commandLineBuilder.build();

            assertEquals("0", getResultMessageMethod.invoke(null, 0), "Should return '0' for success");
            assertEquals("DCERPC_BIND_ERR_ABSTRACT_SYNTAX_NOT_SUPPORTED", getResultMessageMethod.invoke(null, 1),
                    "Should return correct message for error 1");
            assertEquals("DCERPC_BIND_ERR_PROPOSED_TRANSFER_SYNTAXES_NOT_SUPPORTED", getResultMessageMethod.invoke(null, 2),

    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");