function _tWatcher() {
          if (row.expandedRendered) {
            grid.api.expandable.raise.rowExpandedRendered(row, e);
          }
          else {
            window.setTimeout(_tWatcher, 1e2);
          }
        }
@ngdoc object
 @name isExpanded
 @propertyOf  ui.grid.expandable.api:GridRow
 @description Whether or not the row is currently expanded.
 @example
 <pre>
   $scope.api.expandable.on.rowExpandedStateChanged($scope, function (row) {
     if (row.isExpanded) {
       //...
     }
   });
 </pre>