Fix style errors and update changelog

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com)
 
 ### Changed
 
+- #3421 - Remove dependency on Apache Commons Lang 2 for Cloud Service
 - #3420 - Redirect Map Manager - enable Redirect Map Manager in AEM CS (would require a specific - not public yet - AEM CS release version, TBA)
 
 ## 6.6.4 - 2024-08-14

bundle/src/main/java/com/adobe/acs/commons/email/impl/MailTemplateManager.java

@@ -1,7 +1,7 @@
 /*
  * ACS AEM Commons
  *
- * Copyright (C) 2024 Adobe
+ * Copyright (C) 2013 - 2024 Adobe
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,8 +27,22 @@
 
 import com.day.cq.commons.mail.MailTemplate;
 
+/**
+ * Abstraction to allow different methods to be used between Cloud Service and on prem.
+ */
 public interface MailTemplateManager {
 
+    /**
+     * Get the email from the template
+     * @param <T> The email type
+     * @param template The email template
+     * @param params Optional parameters used inside the template
+     * @param mailType The email type
+     * @return The email object
+     * @throws IOException        If an error occurs handling the text template.
+     * @throws MessagingException If an error occurs during building the email message.
+     * @throws EmailException     If an error occurs during building the email.
+     */
     <T extends Email> T getEmail(MailTemplate template, final Map<String, String> params, Class<T> mailType)
     throws IOException, EmailException, MessagingException;
 }