title: How to add multiple collapse in same outline using Epplus c#
body: <p>I need a multiple collapse in same outline level.</p>
  
  <pre><code> for (var j = 0; j &lt;= 2; j++)
    {
      workSheet.Row(j).OutlineLevel = 1;
      workSheet.Row(j).Collapsed = true;
      workSheet.Row(j+3).OutlineLevel = 1;
      workSheet.Row(j+3).Collapsed = true;
    }
  </code></pre>
  
  <p>Is it possible to achieve two collapse in same outline.
  Thanks in Advance:)</p>