/**
     * Default label value to use when no specific label is selected.
     * This affects which documents are included in search results by default.
     */
    @Size(max = 1000)
    public String defaultLabelValue;

    /**
     * Default sort order for search results.
     * Defines how search results are ordered when no specific sort is requested.
     */
    @Size(max = 1000)

    /**
     * Returns an empty OptionalThing for login manager since API actions
     * use token-based authentication instead of traditional session-based login.
     *
     * @return empty OptionalThing indicating no login manager is used
     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {
        return OptionalThing.empty();
    }

    /**

 */
public class RankFusionProcessorEdgeCaseTest extends UnitFessTestCase {

    private static final String ID_FIELD = "_id";

    /**
     * Test behavior when no searchers are registered (empty list).
     */
    @Test
    public void test_emptySearcherList() throws Exception {
        try (RankFusionProcessor processor = new RankFusionProcessor()) {
            processor.init();

    #  Elements of this map are as below:
    #   o key of map: User Definition Name (userDefName)
    #   o url: (NotRequired - Default same as one of main schema)
    #   o schema: (NotRequired - Default treated as no schema setting)
    #   o user: (Required)
    #   o password: password plainly or path to password file (with default password)
    #       e.g. foo or df:dfprop/system-password.txt|foo
    #       (NotRequired - Default '')

            this.name = name;
        }

        @Override
        public void process(String origin, ServletRequest request, ServletResponse response) {
            // Test implementation - no operation
        }

        public String getName() {
            return name;
        }
    }

    public static final String DEFAULT_IGNORE_FAILURE_TYPE = StringUtil.EMPTY;

    /** Default failure count value (-1 indicates no limit). */
    public static final Integer DEFAULT_FAILURE_COUNT = -1;

    /** Default purge day value (-1 indicates no purging). */
    public static final String DEFAULT_PURGE_DAY = "-1";

    /** Default suggest purge day value (30 days). */

            deleteDirectory(tempDir.toFile());
        }
    }

    @Test
    public void test_createDirectories_existingPath() throws Exception {
        // Test that Files.createDirectories is idempotent (no exception on existing dir)
        Path tempDir = Files.createTempDirectory("toctou_test");
        try {
            Path existingPath = tempDir.resolve("existing");
            Files.createDirectories(existingPath);

            ProtwordsFile errorFile = new ProtwordsFile("test_id", nonExistentFile.getAbsolutePath(), new Date());
            errorFile.reload(null);
            // If no exception, the file might have been handled gracefully
            assertTrue(true);
        } catch (Exception e) {
            // Expected for missing file
            assertTrue(true);
        }
    }

                    java.util.function.BiFunction<org.opensearch.action.update.UpdateRequestBuilder, org.opensearch.search.SearchHit, org.opensearch.action.update.UpdateRequestBuilder> processor) {
                // Return 0 to simulate no documents processed due to error
                return 0L;
            }
        };
        ComponentUtil.register(errorClient, "searchEngineClient");

        String result = updateLabelJob.execute();

     *
     * @return The login credential containing the authenticated username,
     *         an ActionResponseCredential for authentication challenges,
     *         or null if no authentication information is available
     * @throws SsoLoginException if SPNEGO authentication fails
     */
    @Override
    public LoginCredential getLoginCredential() {