st         if (centerRegion.regionToNorth != nil && centerRegion.regionToNorth.regionToEast != nil)         {             self.region = centerRegion.regionToNorth.regionToEast;             [self reloadRegion];             self.regionToNortheastScreenshot = [self.collectionView snapshotViewAfterScreenUpdates:YES];         }         else         {             self.regionToNortheastScreenshot = [[UIView alloc] init];             self.regionToNortheastScreenshot.backgroundColor = [UIColor darkGrayColor];         }         [self.view.superview addSubview:self.regionToNorth