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.logic.core; /** * Handles operations related to feedback sessions. * * @see FeedbackSessionAttributes * @see FeedbackSessionsDb */ public final class FeedbackSessionsLogic { private static final Logger log = Logger.getLogger(); private static final String ERROR_NON_EXISTENT_FS_STRING_FORMAT = "Trying to %s a non-existent feedback session: "; private static final String ERROR_NON_EXISTENT_FS_UPDATE = String.format(ERROR_NON_EXISTENT_FS_STRING_FORMAT, "update"); private static final String ERROR_FS_ALREADY_PUBLISH = "Error publishing feedback session: " + "Session has already been published."; private static final String ERROR_FS_ALREADY_UNPUBLISH = "Error unpublishing feedback session: " + "Session has already been unpublished."; private static final int NUMBER_OF_HOURS_BEFORE_CLOSING_ALERT = 24; private static final int NUMBER_OF_HOURS_BEFORE_OPENING_SOON_ALERT = 24; private static final FeedbackSessionsLogic instance = new FeedbackSessionsLogic(); private final FeedbackSessionsDb fsDb = FeedbackSessionsDb.inst(); private CoursesLogic coursesLogic; private FeedbackQuestionsLogic fqLogic; private FeedbackResponsesLogic frLogic; private FeedbackResponseCommentsLogic frcLogic; private InstructorsLogic instructorsLogic; private StudentsLogic studentsLogic; private DeadlineExtensionsLogic deLogic; private FeedbackSessionsLogic() { // prevent initialization } public static FeedbackSessionsLogic inst() { return instance; } void initLogicDependencies() { coursesLogic = CoursesLogic.inst(); fqLogic = FeedbackQuestionsLogic.inst(); frLogic = FeedbackResponsesLogic.inst(); frcLogic = FeedbackResponseCommentsLogic.inst(); instructorsLogic = InstructorsLogic.inst(); studentsLogic = StudentsLogic.inst(); deLogic = DeadlineExtensionsLogic.inst(); } /** * Creates a feedback session. * * @return created feedback session * @throws InvalidParametersException if the session is not valid * @throws EntityAlreadyExistsException if the session already exist */ public FeedbackSessionAttributes createFeedbackSession(FeedbackSessionAttributes fsa) throws InvalidParametersException, EntityAlreadyExistsException { return fsDb.createEntity(fsa); } /** * Gets all ongoing feedback sessions. */ public List<FeedbackSessionAttributes> getAllOngoingSessions(Instant rangeStart, Instant rangeEnd) { return fsDb.getAllOngoingSessions(rangeStart, rangeEnd); } /** * Gets a feedback session from the data storage. * * @return null if not found or in recycle bin. */ public FeedbackSessionAttributes getFeedbackSession(String feedbackSessionName, String courseId) { return fsDb.getFeedbackSession(courseId, feedbackSessionName); } /** * Gets a feedback session from the recycle bin. * * @return null if not found. */ public FeedbackSessionAttributes getFeedbackSessionFromRecycleBin(String feedbackSessionName, String courseId) { return fsDb.getSoftDeletedFeedbackSession(courseId, feedbackSessio
Assistant: