radgrid insert item and edit items from clientside in 2011.1.519.35

Question

Hi i am using telerik 2011.1.519.35 version

how can i get radgrid insert item and edit items from clientside... i've used following methods... but those are not working in version 2011.1.519.35

   function getTableViewInsertItem() {
    var masterTable = $find("<%= RadGrid1.ClientID %>").get_masterTableView();
    //gets the HTML object of the insert item opened in the current GridTableView
    var insertedItem = masterTable.get_insertItem();
    var editedItemsArray = masterTable.get_editItems();
}