如何将gmail线程(电子邮件)移动到存档文件夹？(Obj-C)

#import <GoogleAPIClientForREST/GTLRBase64.h>
#import <GoogleAPIClientForREST/GTLRGmail.h>
#import <GTMSessionFetcher/GTMSessionFetcher.h>

GTLRServiceGmail *service = [[GTLRServiceGmail alloc] init];
service.authorizer = [GIDSignIn sharedInstance].currentUser.authentication.fetcherAuthorizer;

GTLRGmailMessage *message = [[GTLRGmailMessage alloc] init];
message.identifier = @"线程ID";
GTLRGmailMessage *modifiedMessage = [[GTLRGmailMessage alloc] init];
modifiedMessage.identifier = @"目标文件夹ID";
GTLRGmailModifyThreadRequest *request = [[GTLRGmailModifyThreadRequest alloc] init];
request.addLabelIds = @[modifiedMessage.identifier];
request.removeLabelIds = @[message.identifier];

GTLRGmailQuery_UsersThreadsModify *query = [GTLRGmailQuery_UsersThreadsModify queryWithObject:request
                                                                                   userId:@"me"
                                                                                identifier:message.identifier];
[service executeQuery:query
     completionHandler:^(GTLRServiceTicket *ticket, GTLRGmailThread *thread, NSError *error) {
         if (error == nil) {
             NSLog(@"线程移动成功！");
         } else {
             NSLog(@"线程移动失败：%@", error.localizedDescription);
         }
     }];