How I can update the confluence users email addresses in bulk?

import com.atlassian.sal.api.component.ComponentLocatorimport org.apache.log4j.Levelimport org.apache.log4j.Loggerimport com.atlassian.user.User     import com.atlassian.confluence.user.UserAccessorimport com.atlassian.confluence.user.ConfluenceUserimport com.atlassian.user.impl.DefaultUser  Logger  log = Logger.getLogger("com.xxx.updateusers")log.setLevel(Level.ALL)         try{log.info("<------------------------------ User update activity started  -------------------------------------------->");File file = new File('/confluence-sb-uat/shared-home/scripts/azure_confluence_users.csv')def csvMapList = []  file.eachLine { line ->    def columns = line.split(",")    def tmpMap = [:]      tmpMap.putAt("original_username", columns[0])    tmpMap.putAt("new_username", columns[1])    tmpMap.putAt("original_email", columns[2])    tmpMap.putAt("new_email", columns[3])     csvMapList.add(tmpMap)}final String stringConstant = "New";csvMapList.each { map ->    try{                 String originalUserName = map.getAt("original_username")        String newUserName = map.getAt("new_username")        String originalEmail = map.getAt("original_email")        String newEmail = map.getAt("new_email")         log.info(originalUserName+" : "+newUserName+" : "+originalEmail+" : "+newEmail);                UserAccessor userAccessor =  ComponentLocator.getComponent(UserAccessor)          if(userAccessor.exists(originalUserName)){            if(userAccessor.exists(newUserName)){                                   String renameNewUser = newUserName + stringConstant;                String renameEmail = newEmail + stringConstant;                /*Rename the new user's username & email*/                      ConfluenceUser usr = userAccessor.getUserByName(newUserName);                                  final DefaultUser mNewUser = new DefaultUser((User) usr);                    mNewUser.setEmail(renameEmail);                    userAccessor.saveUser((User)mNewUser);                                      userAccessor.renameUser(usr,renameNewUser);                                   /*disabled new user*/                userAccessor.deactivateUser((com.atlassian.user.User) userAccessor.getUserByName(renameNewUser));                                                   /*Update originalUser with New user's username & Email*/                try{                    ConfluenceUser originalUser = userAccessor.getUserByName(originalUserName);                    final DefaultUser mOriginalUser = new DefaultUser((User) originalUser);                    mOriginalUser.setEmail(newEmail);                    userAccessor.saveUser((User)mOriginalUser);                                          userAccessor.renameUser(originalUser,newUserName);                    log.info(originalUserName+" :Old user updated successfully with new user's username:"+newUserName+" & email:"+newEmail);                }catch(e){                                        log.error("Something went wrong while updating the old user. Rollbacking new user rename operation. User:"+newUserName);                     ConfluenceUser usrRollback = userAccessor.getUserByName(renameNewUser);                                   userAccessor.reactivateUser((com.atlassian.user.User) usrRollback);                                           final DefaultUser mNewUserRollback = new DefaultUser((User) usrRollback);                     mNewUserRollback.setEmail(newEmail);                     userAccessor.saveUser((User)mNewUserRollback);                                       userAccessor.renameUser(usrRollback,newUserName);                                                                            }                                                                                    }else{                log.warn("New user not created yet. We are skiping the user update action for user:"+originalUserName);            }                       }else{            log.warn("user not found:"+originalUserName);        }             }catch(e){        log.warn("Something went wrong while updating the user : "+map.getAt("original_username")+" due to "+e.getMessage());     }       }log.info("<------------------------------ User update activity end  -------------------------------------------->");}catch(e){    log.error("Something went wrong while updating the user "+e);}

I tried it successfully. This may help someone.