- (NSURLSessionDataTask *)getChannelsSuccess:(CTVAPIClientSuccessBlock)successBlock failure:(CTVPIClientFailureBlock)failureBlock {
    NSString    *appVersionString = [[[NSBundle mainBundle] infoDictionary] valueForKey:@"CFBundleShortVersionString"];

    NSDictionary    *params = @{@"appversion": appVersionString};

    NSURLSessionDataTask    *task = [self.sessionManager GET:@"channels"
                                                  parameters:params
                                                    progress:nil
                                                     success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
                                                         if (successBlock) {
                                                             successBlock(task, responseObject);
                                                         }
                                                     } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
                                                         // если операция отменена - выход
                                                         if (error.code == -999) {
                                                             return;
                                                         }

                                                         if (failureBlock) {
                                                             failureBlock(task, error);
                                                         }
                                                         [self handleError:error forTask:task];
                                                     }];

    return task;
}