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.common.util; /** * Class contains methods to sanitize user provided * parameters so that they conform to our data format * and possible threats can be removed first * as well as methods to revert sanitized text * back to its previous unsanitized state. */ public final class SanitizationHelper { private static PolicyFactory richTextPolicy = new HtmlPolicyBuilder() .allowStandardUrlProtocols() .allowAttributes("title").globally() .allowAttributes("href").onElements("a") .allowAttributes("src").onElements("img") .allowAttributes("align") .matching(true, "center", "left", "right", "justify", "char") .onElements("p") .allowAttributes("colspan", "rowspan").onElements("td", "th") .allowAttributes("cellspacing").onElements("table") .allowElements( "a", "p", "div", "i", "b", "em", "blockquote", "tt", "strong", "hr", "br", "ul", "ol", "li", "h1", "h2", "h3", "h4", "h5", "h6", "img", "span", "table", "tr", "td", "th", "tbody", "tfoot", "thead", "caption", "colgroup", "sup", "sub", "code") .allowElements("quote", "ecode") .allowStyling() .toFactory(); private SanitizationHelper() { // utility class } /** * Sanitizes a google ID by removing leading/trailing whitespace. * * @return the sanitized google ID or null (if the parameter was null). */ public static String sanitizeGoogleId(String rawGoogleId) { if (rawGoogleId == null) { return null; } return rawGoogleId.trim(); } /** * Sanitizes an email address by removing leading/trailing whitespace. * * @return the sanitized email address or null (if the parameter was null). */ public static String sanitizeEmail(String rawEmail) { return StringHelper.trimIfNotNull(rawEmail); } /** * Sanitizes name by removing leading, trailing, and duplicate internal whitespace. * * @return the sanitized name or null (if the parameter was null). */ public static String sanitizeName(String rawName) { return StringHelper.removeExtraSpace(rawName); } /** * Sanitizes title by removing leading, trailing, and duplicate internal whitespace. * * @return the sanitized title or null (if the parameter was null). */ public static String sanitizeTitle(String rawTitle) { return StringHelper.removeExtraSpace(rawTitle); } /** * Sanitizes a user input text field by removing leading/trailing whitespace. * i.e. comments, instructions, etc. * * @return the sanitized text or null (if the parameter was null). */ public static String sanitizeTextField(String rawText) { return StringHelper.trimIfNotNull(rawText); } /** * Sanitizes the string with rich-text. * Removes disallowed elements based on defined policy. */ public static String sanitizeForRichText(String content) { if (content == null) { return null; } return richTextPolicy.sanitize(sanitizeTextField(content)); } /** * Sanitizes the string for inserting into HTML. Converts special characters * into HTML-safe equivalents. */ public static String sanitizeForHtml(String unsanitizedString) { if (un
Assistant: