assertTrue(sourceFile.exists(), "Source file should exist");
        assertFalse(targetFile.exists(), "Target file should not exist initially");

        // Copy file
        sourceFile.copyTo(targetFile);

        assertTrue(sourceFile.exists(), "Source file should still exist after copy");
        assertTrue(targetFile.exists(), "Target file should exist after copy");

        // Verify content in both files

            keyManager.rotateSessionKey(sessionId);
        }

        // Verify archives exist
        assertTrue(keyManager.hasSessionKey(sessionId + ".v0"), "Version 0 should exist");
        assertTrue(keyManager.hasSessionKey(sessionId + ".v1"), "Version 1 should exist");
        assertTrue(keyManager.hasSessionKey(sessionId + ".v2"), "Version 2 should exist");

        // Remove main key
        keyManager.removeSessionKey(sessionId);

    }

    // Test all annotation methods exist
    public void test_annotationMethods() {
        try {
            final Method protocolTypeMethod = UriType.class.getMethod("protocolType");
            assertNotNull("protocolType() method should exist", protocolTypeMethod);

    }

    // Test all annotation methods exist
    public void test_annotationMethods() {
        try {
            final Method messageMethod = CustomSize.class.getMethod("message");
            assertNotNull("message() method should exist", messageMethod);
            assertEquals("message() return type should be String", String.class, messageMethod.getReturnType());

            "The specified domain did not exist.", "The directory name is invalid.", "Access is denied.",
            "The format of the specified computer name is invalid.", "The pipe has been ended.",
            "The specified local group does not exist.",
            "Logon failure: the user has not been granted the requested logon type at this computer.",

        // Verify required methods exist
        try {
            CustomSizeValidator.class.getMethod("initialize", CustomSize.class);
            CustomSizeValidator.class.getMethod("isValid", CharSequence.class, ConstraintValidatorContext.class);
            assertTrue("Required methods exist", true);
        } catch (final NoSuchMethodException e) {
            fail("Required methods should exist: " + e.getMessage());
        }
    }

        }
    }

    public void test_methodsExist() {
        // Verify that processWebInfLib method is overridden (it's protected so we can't call it directly)
        try {
            final java.lang.reflect.Method method = FessWebResourceRoot.class.getDeclaredMethod("processWebInfLib");
            assertNotNull("processWebInfLib method should exist", method);

            "The specified domain did not exist.", "The directory name is invalid.", "Access is denied.",
            "The format of the specified computer name is invalid.", "The pipe has been ended.",
            "The specified local group does not exist.",
            "Logon failure: the user has not been granted the requested logon type at this computer.",

            // key3 should definitely exist (just created)
            assertNotNull(limitedManager.getLease(key3));

            // key1 should have been evicted (oldest)
            assertNull(limitedManager.getLease(key1));

            // key2 should still exist (not the oldest)
            assertNotNull(limitedManager.getLease(key2));
        } finally {

But in some cases you need to return a different status code than the default.

## Use case { #use-case }

For example, imagine that you want to return an HTTP status code of "OK" `200` by default.

But if the data didn't exist, you want to create it, and return an HTTP status code of "CREATED" `201`.

But you still want to be able to filter and convert the data you return with a `response_model`.

For those cases, you can use a `Response` parameter.