title: Tooltip for a panel in extjs
body: <p>I am dynamically adding panel to a container. i want to set a tool-tip for this panel on hover. how to do that?</p>
  
  <pre><code>var myPanel = Ext.create('myClass.extending panel');
  myPanel.id = 'my-id';
  myPanel.setTitle('myTitle');              
  myPanel.collapsed = true;
  this.add(myPanel);
  </code></pre>
  
  <p><strong>UPDATE:</strong> I tried following also , but not working</p>
  
  <pre><code>var panelToolTip = Ext.create('Ext.tip.ToolTip', {
          target: 'my-id',
          html: 'I am a tooltip on your panel.'
  });
  this.add(panelToolTip);
  </code></pre>