assertThat(StringUtil.defaultString("aaa", null), is("aaa"));
        assertThat(StringUtil.defaultString(null, null), is(nullValue()));
    }

    @Test
    public void testNewStringUnsafe() {
        assertNull(StringUtil.newStringUnsafe(null));
        Method newStringUnsafeMethod = StringUtil.newStringUnsafeMethod;
        if (newStringUnsafeMethod != null) {

        if (path == null || path.isEmpty()) {
            throw new SmbException("Path cannot be null or empty");
        }

        // Check length
        if (path.length() > maxPathLength) {
            throw new SmbException("Path exceeds maximum length: " + path.length() + " > " + maxPathLength);
        }

        // Check for null bytes
        if (NULL_BYTE.matcher(path).find()) {

        assertEquals("", item2.getInputValue());

        // Test with null input - should return empty string
        StopwordsItem item3 = new StopwordsItem(3, null);
        assertEquals("", item3.getInputValue());
    }

    public void test_isUpdated() {
        // Test isUpdated method
        StopwordsItem item = new StopwordsItem(1, "original");
        assertFalse(item.isUpdated());

     * @return This request, never {@code null}.
     */
    @Override
    MetadataResolutionRequest setOffline(boolean offline);

    /**
     * Gets the artifact to resolve metadata for.
     *
     * @return The artifact to resolve metadata for or {@code null} if not set.
     */
    Artifact getArtifact();

    /**

    }

    public void test_constructor_withNullTypeAndMessage() {
        // Test constructor with both null type and message
        String type = null;
        String message = null;
        InvalidAccessTokenException exception = new InvalidAccessTokenException(type, message);

        assertNull(exception.getType());
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

        // Simulate decode_out with null info and totalentries
        netdfs.NetrDfsEnumEx decodedEnumEx = new netdfs.NetrDfsEnumEx(null, 0, 0, null, null);

        // Manually encode the expected output for decode_out
        byte[] encodeBufferOut2 = new byte[1024];
        NdrBuffer dstOut = new NdrBuffer(encodeBufferOut2, 0);

        // Simulate info pointer (null)
        dstOut.enc_ndr_long(0); // Null pointer for info

            final String encoding = loadCharset(is);
            if (encoding == null) {
                if (defaultEncoding == null) {
                    responseData.setCharSet(Constants.UTF_8);
                } else if (responseData.getCharSet() == null) {
                    responseData.setCharSet(defaultEncoding);
                }
            } else {

        // Test constructor with null message
        CommandExecutionException exception = new CommandExecutionException(null);

        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withNullMessageAndCause() {
        // Test constructor with null message and null cause

                    if (manifest != null && manifest.getEntries() != null) {
                        final Attributes attributes = manifest.getMainAttributes();
                        if (attributes != null
                                && (attributes.get("Fess-WebAppJar") != null || attributes.getValue("Fess-WebAppJar") != null)) {

  public void testContains_nullNotContainedButQueriesSupported() {
    assertFalse("contains(null) should return false", collection.contains(null));
  }

  @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
  public void testContains_nullNotContainedAndUnsupported() {
    expectNullMissingWhenNullUnsupported("contains(null) should return false or throw");
  }

  @CollectionFeature.Require(ALLOWS_NULL_VALUES)