title: Get the current store -Ext JS
body: <p>Simple question here,</p>
  
  <p>I have a grid in my application that can hold one of any 3 given stores (utlizes bindStore() function).</p>
  
  <p>Is there a function to retrieve the current store? Something like: <code>Ext.getStore(grid.currentStore());</code> </p>
  
  <p>Cheers!</p>