code: function() {
          var me = this,
              view = me.view;
  
          view.on({
              scope: me,
              groupclick: me.onGroupClick
          });
  
          if (me.enableGroupingMenu) {
              me.injectGroupingMenu();
          }
  
          me.pruneGroupedHeader();
  
          me.lastGroupField = me.getGroupField();
          me.block();
          me.onGroupChange();
          me.unblock();
      }
docs: Attach events to view