files.add(file);
            } catch (Exception e) {
                log.warn("Error creating SmbFile from cache for {}: {}", fileInfo.getName(), e.getMessage());
                // For testing purposes, continue processing other files
                // In a real scenario, you might want to handle this differently
            }
        }

        return files;
    }

    /**

	token := r.Form.Get(stsToken)
	if token == "" {
		token = r.Form.Get(stsWebIdentityToken)
	}

	accessToken := r.Form.Get(stsWebIdentityAccessToken)

	// RoleARN parameter processing: If a role ARN is given in the request, we
	// use that and validate the authentication request. If not, we assume this
	// is an STS request for a claim based IDP (if one is present) and set
	// roleArn = openid.DummyRoleARN.

                    responseData.setMimeType(APPLICATION_OCTET_STREAM);
                }
            } else if (file.isDirectory()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Processing directory: directory={}", file.getAbsolutePath());
                }
                final Set<RequestData> requestDataSet = new HashSet<>();
                if (includeContent) {

    }

    /**
     * Checks if the given URL is a file path protocol that requires directory and permission handling.
     * Used for incremental crawling directory detection and file permission processing.
     *
     * @param url the URL to check
     * @return true if the URL uses a file path protocol (smb, smb1, file, ftp, s3, gcs)
     */
    public boolean isFilePathProtocol(final String url) {

        User user = createTestUser("testuser");
        try {
            authenticationManager.insert(user);
            fail("Should throw NullPointerException when processing null chain");
        } catch (NullPointerException e) {
            // Expected behavior when null chain is processed
            assertTrue(true);
        }
    }

    // Test chains order preservation

    }

    @Test
    public void test_constants_coverage() {
        // Test coverage for private constants indirectly
        // The DISABLE_URL_ENCODE constant is used in URL processing
        assertTrue(true);
    }

    @Test
    public void test_getAvailableBoostDocumentRuleList_emptyResult() {
        // Mock FessConfig with minimal settings

 *   <li>Configuring suggestion details, reading converter, normalizer, prefix match weight, match word first, and skip duplicate words options.</li>
 *   <li>Building the query and filter query for the suggestion request.</li>
 *   <li>Processing the request and handling the response or failure.</li>
 *   <li>Creating the response from the search results.</li>
 * </ul>
 *
 * <p>Example usage:</p>
 * <pre>
 * SuggestRequest suggestRequest = new SuggestRequest();

        assertEquals(4, read1);
        assertEquals(4, read2);
        assertEquals(4, read3);
    }

    @Test
    @DisplayName("Should validate structure size before processing")
    void testStructureSizeValidation() {
        // Given various invalid structure sizes
        int[] invalidSizes = { -1, 0, 1, 2, 3, 5, 6, 8, 16, 32, 64, 128, 256, 512, 1024 };

    assertThat(CharMatcher.none().or(WHATEVER)).isSameInstanceAs(WHATEVER);
  }

  // The rest of the behavior of ANY and DEFAULT will be covered in the tests for
  // the text processing methods below.

  public void testWhitespaceBreakingWhitespaceSubset() throws Exception {
    for (int c = 0; c <= Character.MAX_VALUE; c++) {
      if (breakingWhitespace().matches((char) c)) {

 * This class provides functionality to load, parse, and manage character mapping
 * rules that define how input characters should be transformed to output characters
 * during text analysis and search processing.
 *
 * Character mapping files contain mapping rules in the format:
 * input1,input2,... => output
 */
public class CharMappingFile extends DictionaryFile<CharMappingItem> {
    /** Logger instance for this class. */