title: How to collapse the sidebar by default in ag grid
body: <p>I try to collapse the sidebar by default in ag grid. i don't want extend it until i click on the columns tap on the right side.</p>
  
  <p>I tryed to do <code>[showToolPanel]="false"</code> but it will hide all the sidebar.</p>
  
  <p>is there easy way to do that ?</p>
  
  <p><a href="https://next.plnkr.co/edit/UJRD2lrOQe6C7Lfs" rel="nofollow noreferrer">https://next.plnkr.co/edit/UJRD2lrOQe6C7Lfs</a></p>
  
  <p><a href="https://i.stack.imgur.com/AIOgv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AIOgv.png" alt="enter image description here"></a></p>