maximgavrilov

#import <Bolts/Bolts.h>

@property (strong, nonatomic) BFTask *backgroundRequest1;

- (BFTask<NSData *> *)dataTaskWithURL:(NSURL *)url
{
    BFTaskCompletionSource *taskCompletionSource = [BFTaskCompletionSource taskCompletionSource];
    NSURLSessionDataTask *task = [[NSURLSession sharedSession] dataTaskWithURL:url
                                                             completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                                 NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;