Mixi revoke and Mixi setup

gistfile1.m

// in Mixi.m
/*
 is there a way can check revoke successful?
 i can not find where return kMixiAppApiTypeRevoke value in 
- (NSString*)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation error:(NSError**)error
 but in README said we can check it.
*/

NSError *error = nil;
NSString *apiType = [[Mixi sharedMixi] application:application openURL:url sourceApplication:sourceApplication annotation:annotation error:&error];
if (error) {
　　// エラーが発生しました
}
else if ([apiType isEqualToString:kMixiAppApiTypeToken]) {
　　// 認可処理に成功しました
}
else if ([apiType isEqualToString:kMixiAppApiTypeRevoke]) {
　　// 認可解除処理に成功しました
}

- (NSString*)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation error:(NSError**)error 
{
    if ([[url path] isEqualToString:@"/error"]) {
        if (error != nil) {
            *error = [self retrieveErrorFromURL:url];
        }
    }
    else if ([[url path] isEqualToString:@"/cancel"]) {
        if (error != nil) {
            *error = [NSError errorWithDomain:kMixiErrorDomain 
                                         code:kMixiCancelled
                                     userInfo:[NSDictionary dictionaryWithObject:@"Your request cancelled." forKey:@"message"]];
        }
    }
    else if ([[url host] isEqualToString:@"token"]) {
        UIPasteboard *pasteboard = [UIPasteboard pasteboardWithName:self.config.pbkey create:NO];
        if (pasteboard == nil) {
            if (error != nil) {
                *error = [NSError errorWithDomain:kMixiErrorDomain
                                             code:kMixiTokenErrorCannotRetrieve
                                         userInfo:[NSDictionary dictionaryWithObject:@"Any token cannot be retrieved." forKey:@"message"]];
            }
        }
        else {
            url = (NSURL*)[pasteboard valueForPasteboardType:@"public.url"];
            [self retrieveTokensFromURL:url sourceApplication:sourceApplication error:error];
            if (error == nil || *error == nil) {
                [self store];
            }
        }
        return kMixiAppApiTypeToken;
    }
    else if ([[url host] isEqualToString:@"run"] && [[url query] hasPrefix:@"mixi_request_id="]) {
        return kMixiAppApiTypeReceiveRequest;
    }
    return [url host];
}


// here is setup Mixi singleton code

    _mixi = [[Mixi sharedMixi] setupWithType:kMixiApiTypeSelectorGraphApi

                                    clientId:[[self class] appKey]

                                      secret:[[self class] appSecret]

                                       appId:[[self class] appId]];