requiredContentSizeIdentifiers is deprecated

my code is ``` -(void)viewDidLoad { adView = [[ADBannerView alloc] initWithFrame:CGRectZero]; adView.frame = CGRectOffset(adView.frame, 0, -50); adView.requiredContentSizeIdentifiers = [NSSet setWithObject:ADBannerContentSizeIdentifierPortrait]; adView.currentContentSizeIdentifier =ADBannerContentSizeIdentifierPortrait; [self.view addSubview:adView]; adView.delegate=self; self.bannerIsVisible=NO; [super viewDidLoad]; } //when banner is loaded successfully - (void)bannerViewDidLoadAd:(ADBannerView *)banner { if (!self.bannerIsVisible) { [UIView beginAnimations:@"animateAdBannerOn" context:NULL]; // banner is invisible now and moved out of the screen on 50 px banner.frame = CGRectOffset(banner.frame, 0, 50); [UIView commitAnimations]; self.bannerIsVisible = YES; } } //when any problems occured - (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error { if (self.bannerIsVisible) { [UIView beginAnimations:@"animateAdBannerOff" context:NULL]; // banner is visible and we move it out of the screen, due to connection issue banner.frame = CGRectOffset(banner.frame, 0, -50); [UIView commitAnimations]; self.bannerIsVisible = NO; } } ``` The code ``` currentContentSizeIdentifier requiredContentSizeIdentifiers ADBannerContentSizeIdentifierPortrait ``` is deprecated, so what do I replace it with, so it will still work? I need to do this before I submit it, because if I don't, the app will get rejected. Please help me Thanks in Advance