{
                    var state = $(this).data('treegrid');
                    if (state.options.loadFilter == pagerFilter) {
                        $.map(param.data, function (row) {
                            row._parentId = row._parentId || param.parent;
                            state.originalRows.push(row);
                        });
                        $(this).treegrid('loadData', state.originalRows);
                    } else {
                        appendMethod.call($.fn.treegrid.method