title: How to change height of grouped UITableView header?
body: <p>I know how to change the height of the section headers in the table view.  But I am unable to find any solution to change the default spacing before the first section.</p>
  
  <p>Right now I have this code:</p>
  
  <pre><code>- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
      if (section == 0){
          return 0;
      }
      return 10;
  }
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/Q7n3F.png" alt="enter image description here"></p>