How to use AFNetworking synchronously

SynchronousAFNetworking.m

#import "AFNetworking.h"

int main(void)
{
    NSURL *baseURL = [NSURL URLWithString:@"http://graph.facebook.com/"];
    AFHTTPRequestOperationManager *operationManager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];
    AFHTTPRequestOperation *operation = [operationManager GET:@"Octiplex" parameters:nil success:nil failure:nil];
    [operationManager.operationQueue waitUntilAllOperationsAreFinished];
    [[NSRunLoop currentRunLoop] runUntilDate:[NSDate date]]; // Executes async notification blocks waiting in the main queue
    NSLog(@"Response: %@", operation.responseObject);
    return 0;
}