} catch (InterruptedException e) {
            fail("Thread interrupted");
        }
    }

    @Test
    public void test_genericTypeSafety_withSubclass() {
        // Test that the exception accepts RootAction subclasses
        // This verifies the change from Class<RootAction> to Class<? extends RootAction>
        UserRoleLoginException exception = new UserRoleLoginException(TestAction.class);

# ADR-0010 - Gradle properties naming

## Status

- ACCEPTED on 2026-03-05
- PROPOSED on 2026-02-26

## Context

[Gradle properties](https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties)
are flags that allow build engineers to opt into and out of features of Gradle Runtime or Core Plugins.
Practically every Gradle feature is behind a flag, and additional sub-flags or options provide further control.

        assertTrue(toStringResult.contains(message));
    }

    @Test
    public void test_constructorWithThrowableCause_Error() {
        // Test that the constructor can accept Error as cause (not just Exception)
        // This verifies the change from Exception to Throwable parameter
        String message = "Thumbnail generation failed due to OutOfMemoryError";

            capturedCmdList = new ArrayList<>(cmdList);

            ProcessBuilder pb = new ProcessBuilder(cmdList);
            capturedEnvironment = new HashMap<>(pb.environment());
            pbConsumer.accept(pb);
            capturedDirectory = pb.directory();
            capturedEnvironment = new HashMap<>(pb.environment());

            return new TestJobProcess(exitValue, processOutput);
        }

            final int bufferSize, final Consumer<String> outputCallback) {
        final ProcessBuilder pb = new ProcessBuilder(cmdList);
        pbCall.accept(pb);

        // Remove and destroy any existing process for this session
        final JobProcess oldProcess = runningProcessMap.remove(sessionId);
        if (oldProcess != null) {

            if (commandLineArgsMatcher.find() && pidMatcher.find()) {
                String pid = pidMatcher.group(1);
                if (!MY_PID.equals(pid)) {
                    action.accept(pid, line);
                }
            }
        });
    }

    private static List<String> ps() {
        return run(determinePsCommand()).assertZeroExit().stdout.lines().collect(Collectors.toList());

    }

    // Test constructor with null config
    @Test
    public void test_constructor_nullConfig() {
        try {
            new FessTimeResourceProvider(null);
            // Constructor may accept null, so test continues
            assertTrue(true);
        } catch (NullPointerException e) {
            // Expected if constructor validates input
            assertTrue(true);
        }
    }

            logger.debug("url={}", url);
        }
        try (CurlResponse response = Curl.get(url)
                .header("Authorization", "Bearer " + user.getAuthenticationResult().accessToken())
                .header("Accept", "application/json")
                .execute()) {
            final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());
            if (logger.isDebugEnabled()) {

                .stream(out -> {
                    try (final Writer writer = new BufferedWriter(new OutputStreamWriter(out.stream(), Constants.CHARSET_UTF_8))) {
                        writeCall.accept(writer);
                        writer.flush();
                    } catch (final Exception e) {
                        logger.warn("Failed to write {} to response.", id, e);
                    }
                });

## Language Detection and Selection

### User Interface Language

Fess determines the UI language in this order:

1. **Query parameter**: `?browser_lang=[locale]` (highest priority)
2. **Browser header**: `Accept-Language` header
3. **Fallback**: English (from `fess_label.properties` and `fess_message.properties`)

### Document Language Detection

During crawling and indexing, Fess: