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; /** * Represents an email message and its important metadata. */ public class EmailWrapper { /** * Prefix appended to the subject if the email is set as a copy. */ public static final String EMAIL_COPY_SUBJECT_PREFIX = "[Email Copy] "; private EmailType type; private String senderName; private String senderEmail; private String replyTo; private String recipient; private String bcc; private String subject; private String content; private boolean isCopy; public EmailType getType() { return type; } public void setType(EmailType type) { this.type = type; } public String getSenderName() { return senderName; } public void setSenderName(String senderName) { this.senderName = senderName; } public String getSenderEmail() { return senderEmail; } public void setSenderEmail(String senderEmail) { this.senderEmail = senderEmail; } public String getReplyTo() { return replyTo; } public void setReplyTo(String replyTo) { this.replyTo = replyTo; } public String getRecipient() { return recipient; } public void setRecipient(String recipient) { this.recipient = recipient; } public String getBcc() { return bcc; } public void setBcc(String bcc) { this.bcc = bcc; } public String getSubject() { return subject; } public void setSubject(String subject) { this.subject = subject; } /** * Sets the email subject based on the email type and inserts the specified {@code params} * in the indicated places. */ public void setSubjectFromType(Object... params) { if (type != null) { this.subject = String.format(type.getSubject(), params); } if (isCopy) { this.subject = EMAIL_COPY_SUBJECT_PREFIX + this.subject; } } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public boolean getIsCopy() { return isCopy; } public void setIsCopy(boolean isCopy) { this.isCopy = isCopy; } }
    
Assistant: