title: ExtJs - getRow by index of Gridpanel
body: <p>Im using Extjs 4.1 with a gridpanel. Now I want to get a row by id/index to just hide it (not filter).</p>
  
  <p>I tried that (it says there is no method getRow):</p>
  
  <p><code>gridpanel.getView().getRow( 0 );</code></p>
  
  <p>What is the correct way now?</p>
  
  <p>I know <code>gridview</code> has <code>getRow</code>, so why cant I use it?</p>
  
  <p>Edit: there seems to be no such method in 4.</p>