title: firing itemtap event on Ext.List
body: <p>I have defined a sencha List as below</p>
  
  <pre><code>Ext.List({
                      itemTpl: '&lt;div class={filterClass}&gt;&lt;/div&gt;{filterType}',
                      id: 'sFilter',
                      width: 200,
                      cls: 'sFilter',
                      grouped: false,
                      indexBar: false,
                      store: store,
                      listeners: {
                          itemtap: function (me, index, item, e) {
                              var selectedRecord = me.store.getAt(index);
                              var filterTag = selectedRecord.data.filterTag;
                              if (filterTag !== searchResultTag.Everything) {
                                  var filteredResults = filterResults(filterTag, allResults);
                                  //some more code
                              } else {
                                  //some more code
                              }
                          }
                      }
                  });
  </code></pre>
  
  <p>Items of the list are dynamically added and they dont have an "id".
  I would like to fire (first item) itemtap event on the above list. How can I do that?</p>