public BsBulkAction AddAction(BsBulkActionType type)
 {
     var bulkAction = new BsBulkAction(type, viewContext);
     this.AddAction(bulkAction);
     return bulkAction;
 }
 public BsBulkAction AddAction(BsBulkAction bulkAction)
 {
     actions.Add(bulkAction);
     return bulkAction;
 }
 public BsBulkAction AddAction()
 {
     var bulkAction = new BsBulkAction();
     actions.Add(bulkAction);
     return bulkAction;
 }