Assistant: 
User: 
    Please analyze the following code file and determine whether it belongs to any of the provided modules based on the listed module descriptions.
    Note that the provided list of modules may not be exhaustive, and some files may not belong to any of the modules. 
    If the code belongs to a module, Only output the module name, without any explanation or additional information; otherwise, return 'None' if it does not belong to any module.

    Modules : {
        "UI": "Handles the front-end user interface, consisting of HTML, CSS, and JavaScript files generated by the Angular framework. It processes user requests and interacts with the server using AJAX for data retrieval and client-side interactions."
"Test Driver": "Facilitates automated regression testing and handles transmission of test data in JSON format. It performs Java testing using TestNG and JavaScript unit-testing with Jest. It also sets up a simulated web server for servlet-level tests and automates end-to-end testing using Selenium Java."
"Logic": "Manages the business logic of TEAMMATES, including handling relationships between entities, managing transactions, input value sanitization, access control rights, and interfacing with GAE-provided or third-party APIs."
"Storage": "Performs CRUD operations on data entities, validation of data, and abstraction of GQL queries, hiding the complexities of datastore from the Logic component."
"Common": "Contains utility classes, custom exceptions, and data transfer objects used across the entire application for easy consolidation and transfer of structured data."
"E2E": "Handles end-to-end testing and load & performance testing, providing helpers, abstractions of browser pages, and test cases for E2E tests and L&P tests."
"Client": "Contains scripts for administrative tasks, such as migrating data to a new schema and calculating statistics. This module connects directly to the application back-end for administrative purposes."
    }

    Code: package teammates.e2e.cases; /** * Base class for all browser tests. * * <p>This type of test has no knowledge of the workings of the application, * and can only communicate via the UI or via {@link BackDoor} to obtain/transmit data. */ public abstract class BaseE2ETestCase extends BaseTestCaseWithDatabaseAccess { /** * Backdoor used to call APIs. */ protected static final BackDoor BACKDOOR = BackDoor.getInstance(); /** * Data to be used in the test. */ protected DataBundle testData; private Browser browser; @BeforeClass public void baseClassSetup() { prepareTestData(); prepareBrowser(); } /** * Prepares the browser used for the current test. */ protected void prepareBrowser() { browser = new Browser(); } /** * Prepares the test data used for the current test. */ protected abstract void prepareTestData(); /** * Contains all the tests for the page. * * <p>This approach is chosen so that setup and teardown are only needed once per test page, * thereby saving time. While it necessitates failed tests to be restarted from the beginning, * test failures are rare and thus not causing significant overhead. */ protected abstract void testAll(); @Override protected String getTestDataFolder() { return TestProperties.TEST_DATA_FOLDER; } @AfterClass public void baseClassTearDown(ITestContext context) { if (browser == null) { return; } boolean isSuccess = context.getFailedTests().getAllMethods() .stream() .noneMatch(method -> method.getConstructorOrMethod().getMethod().getDeclaringClass() == this.getClass()); if (isSuccess || TestProperties.CLOSE_BROWSER_ON_FAILURE) { browser.close(); } } /** * Creates an {@link AppUrl} for the supplied {@code relativeUrl} parameter. * The base URL will be the value of test.app.frontend.url in test.properties. * {@code relativeUrl} must start with a "/". */ protected static AppUrl createFrontendUrl(String relativeUrl) { return new AppUrl(TestProperties.TEAMMATES_FRONTEND_URL + relativeUrl); } /** * Creates an {@link AppUrl} for the supplied {@code relativeUrl} parameter. * The base URL will be the value of test.app.backend.url in test.properties. * {@code relativeUrl} must start with a "/". */ protected static AppUrl createBackendUrl(String relativeUrl) { return new AppUrl(TestProperties.TEAMMATES_BACKEND_URL + relativeUrl); } /** * Logs in to a page using the given credentials. */ protected <T extends AppPage> T loginToPage(AppUrl url, Class<T> typeOfPage, String userId) { // When not using dev server, Google blocks log in by automation. // To work around that, we inject the user cookie directly into the browser session. if (!TestProperties.isDevServer()) { // In order for the cookie injection to work, we need to be in the domain. // Use the home page to minimize the page load time. browser.goToUrl(TestProperties.TEAMMATES_FRONTEND_URL); String cookieValue = BACKDOOR.getUserCookie(userId); browser.addCookie(Const.SecurityConfig.AUTH_COOKIE_
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