if (@available(iOS 11.0, *)) {
self.discoveryHealthTableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
} else {
}?
if (@available(iOS 11.0, *)) {
self.discoveryHealthTableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
} else {
}?