return langSet.toArray(new String[langSet.size()]);
                }
            }
        }
        return StringUtil.EMPTY_STRINGS;
    }

    /**
     * Retrieves a single document by its document ID.
     *
     * @param docId The document ID to retrieve
     * @param fields Array of field names to include in the result
     * @param userBean Optional user information for permission checking

import org.dbflute.optional.OptionalEntity;

/**
 * Manages a dictionary file for stopwords.
 * This class handles reading, parsing, and updating files that contain
 * a list of stopwords. Each line in the file represents a single stopword.
 *
 * The class provides methods for retrieving, adding, updating, and
 * deleting stopword items, as well as reloading the dictionary
 * from its source file.
 */

        }
        return newValue;
    }

    /**
     * Builds the complete query string from the configured parameters.
     * Combines base query, extra queries, field filters, and sort field into a single query string.
     *
     * @return the complete formatted query string
     */
    public String build() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        return value;
    }

    /**
     * Gets a typed value from a document map.
     * Supports conversion to String, Date, Long, Integer, Double, Float, Boolean,
     * List, and String array types. Handles both single values and arrays/lists.
     *
     * @param <T> the type to convert the value to
     * @param doc the document map to extract the value from
     * @param key the key to look up in the document map

 * is properly escaped in regex patterns to match literally.
 */
public class CrawlerRuleMimeTypePatternTest extends UnitFessTestCase {

    // Pattern from webFileRule in rule.xml
    // Note: In XML, single backslash is used. In Java string, we need to double it.
    private static final String WEB_FILE_RULE_PATTERN = "(application/xml" //
            + "|application/xhtml\\+xml" //
            + "|application/rdf\\+xml" //

    }

    @Test
    public void test_specialCharactersInMessage() {
        // Test with special characters in message
        String messageWithSpecialChars = "Error: offset > 1000 && offset < 2000 | \"quotes\" 'single' \n\t tab";
        ResultOffsetExceededException exception = new ResultOffsetExceededException(messageWithSpecialChars);

        assertEquals(messageWithSpecialChars, exception.getMessage());
    }

    @Test

            return input;
        }
        return ComponentUtil.getDocumentHelper().encodeSimilarDocHash(input);
    }

    /**
     * Joins array or list elements into a single space-separated string.
     *
     * @param input the input object (String[], List, or String)
     * @return joined string with elements separated by spaces, or empty string if invalid input
     */

        String[] result = invokeDistinct(input);
        assertSame(input, result);
    }

    @Test
    public void test_distinct_singleElement() {
        // Test distinct with single element
        String[] input = new String[] { "element" };
        String[] result = invokeDistinct(input);
        assertSame(input, result);
    }

    @Test
    public void test_distinct_noDuplicates() {

                } catch (final IOException e) {
                    throw new CrawlerSystemException(e);
                }
            }
        }

        /**
         * Gets the captured output as a single string.
         * @return The captured output with newlines.
         */
        public String getOutput() {
            final StringBuilder buf = new StringBuilder(100);
            for (final String value : list) {

            assertNotNull(results);
            assertEquals(0, results.size());
        }
    }

    /**
     * Test with searcher that returns single document.
     */
    @Test
    public void test_searcherReturnsSingleDocument() throws Exception {
        try (RankFusionProcessor processor = new RankFusionProcessor()) {