in CustomUI/CustomUI/Controllers/SourceSelectViewController.swift [104:110]
func tableView(_ tableView: UITableView, willBeginEditingRowAt indexPath: IndexPath) {
if #available(iOS 11.0, *) {} else {
if let cell = tableView.cellForRow(at: indexPath) as? SourceTableViewCell {
cell.applyMaskLayer(90)
}
}
}