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; /** * Used to handle the data validation aspect e.g. validate emails, names, etc. */ public final class FieldValidator { ///////////////// // FIELD TYPES // ///////////////// // name-related public static final String PERSON_NAME_FIELD_NAME = "person name"; public static final int PERSON_NAME_MAX_LENGTH = 100; public static final String COURSE_NAME_FIELD_NAME = "course name"; public static final int COURSE_NAME_MAX_LENGTH = 80; public static final String FEEDBACK_SESSION_NAME_FIELD_NAME = "feedback session name"; public static final int FEEDBACK_SESSION_NAME_MAX_LENGTH = 64; public static final String TEAM_NAME_FIELD_NAME = "team name"; public static final int TEAM_NAME_MAX_LENGTH = 60; public static final String SECTION_NAME_FIELD_NAME = "section name"; public static final int SECTION_NAME_MAX_LENGTH = 60; public static final String INSTITUTE_NAME_FIELD_NAME = "institute name"; public static final int INSTITUTE_NAME_MAX_LENGTH = 64; // email-related public static final String EMAIL_FIELD_NAME = "email"; public static final int EMAIL_MAX_LENGTH = 254; // notification-related public static final String NOTIFICATION_TITLE_FIELD_NAME = "notification title"; public static final String NOTIFICATION_MESSAGE_FIELD_NAME = "notification message"; public static final String NOTIFICATION_NAME = "notification"; public static final String NOTIFICATION_VISIBLE_TIME_FIELD_NAME = "time when the notification will be visible"; public static final String NOTIFICATION_EXPIRY_TIME_FIELD_NAME = "time when the notification will expire"; public static final String NOTIFICATION_STYLE_FIELD_NAME = "notification style"; public static final String NOTIFICATION_TARGET_USER_FIELD_NAME = "notification target user"; public static final int NOTIFICATION_TITLE_MAX_LENGTH = 80; public static final List<String> NOTIFICATION_STYLE_ACCEPTED_VALUES = Collections.unmodifiableList( Arrays.stream( NotificationStyle.values()) .map(NotificationStyle::toString) .collect(Collectors.toList()) ); public static final List<String> NOTIFICATION_TARGET_USER_ACCEPTED_VALUES = Collections.unmodifiableList( Arrays.stream( NotificationTargetUser.values()) .map(NotificationTargetUser::toString) .collect(Collectors.toList()) ); // others public static final String STUDENT_ROLE_COMMENTS_FIELD_NAME = "comments about a student enrolled in a course"; public static final int STUDENT_ROLE_COMMENTS_MAX_LENGTH = 500; /* * ======================================================================= * Field: Course ID * Unique: system-wide, not just among the course of that instructor. * Technically, we can get rid of CourseID field and enforce users to use * CourseName as a unique ID. In that case, we have to enforce CourseName * must be unique across the full system. However, users expect names to be * non-unique and more tolerant of enforcing uniqueness on an ID. Whenever * possible, must be display
Assistant: