TableView section seperator line

Question

I wanted to add separator line into the table view section. Currently the code for the header section view will be:

- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section {
    // recast your view as a UITableViewHeaderFooterView
    UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view;
    header.backgroundView.backgroundColor = [UIColor clearColor];
    header.textLabel.textColor = [UIColor blackColor];
    [header.textLabel setFont:[UIFont fontWithName:@"Rubik-Regular" size:15.0]];

}