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.ui.webapi; /** * An "action" to be performed by the system. * If the requesting user is allowed to perform the requested action, * this object can talk to the back end to perform that action. */ public abstract class Action { Logic logic = Logic.inst(); UserProvision userProvision = UserProvision.inst(); GateKeeper gateKeeper = GateKeeper.inst(); EmailGenerator emailGenerator = EmailGenerator.inst(); TaskQueuer taskQueuer = TaskQueuer.inst(); EmailSender emailSender = EmailSender.inst(); RecaptchaVerifier recaptchaVerifier = RecaptchaVerifier.inst(); LogsProcessor logsProcessor = LogsProcessor.inst(); AuthProxy authProxy = AuthProxy.inst(); HttpServletRequest req; UserInfo userInfo; AuthType authType; private StudentAttributes unregisteredStudent; private InstructorAttributes unregisteredInstructor; // buffer to store the request body private String requestBody; /** * Initializes the action object based on the HTTP request. */ public void init(HttpServletRequest req) { this.req = req; initAuthInfo(); } public void setUserProvision(UserProvision userProvision) { this.userProvision = userProvision; } public void setTaskQueuer(TaskQueuer taskQueuer) { this.taskQueuer = taskQueuer; } public void setEmailSender(EmailSender emailSender) { this.emailSender = emailSender; } public void setRecaptchaVerifier(RecaptchaVerifier recaptchaVerifier) { this.recaptchaVerifier = recaptchaVerifier; } public void setLogsProcessor(LogsProcessor logsProcessor) { this.logsProcessor = logsProcessor; } public void setAuthProxy(AuthProxy authProxy) { this.authProxy = authProxy; } /** * Checks if the requesting user has sufficient authority to access the resource. */ public void checkAccessControl() throws UnauthorizedAccessException { String userParam = getRequestParamValue(Const.ParamsNames.USER_ID); if (userInfo != null && userParam != null && !userInfo.isAdmin && !userInfo.id.equals(userParam)) { throw new UnauthorizedAccessException("User " + userInfo.id + " is trying to masquerade as " + userParam + " without admin permission."); } if (authType.getLevel() < getMinAuthLevel().getLevel()) { // Access control level lower than required throw new UnauthorizedAccessException("Not authorized to access this resource."); } if (authType == AuthType.ALL_ACCESS) { // All-access pass granted return; } // All other cases: to be dealt in case-by-case basis checkSpecificAccessControl(); } /** * Gets the user information of the current user. */ public RequestLogUser getUserInfoForLogging() { RequestLogUser user = new RequestLogUser(); String googleId = userInfo == null ? null : userInfo.getId(); user.setGoogleId(googleId); if (unregisteredStudent == null && unregisteredInstructor == null) { user.setRegkey(getRequestParamValue(Const.ParamsNames.REGKEY)); } else if (unregisteredStudent != null) { user.setRegkey(unregisteredStudent.getKey()); user.setEmail(unregisteredStudent.getEmai
Assistant: