Merge cells in google sheets

MergeCellsGoogleSheets.php

<?php

class Test {
   public function test() {
               $service = new Google_Service_Sheets(GoogleService::getClient());
        $spreadsheetId = 'abcdf';

        $values = [
            ["Item", "Cost", "Stocked"],
            ["Wheel", "$20.50", "4"]
        ];

        $valueRange = new Google_Service_Sheets_ValueRange([
            'values' => $values,
        ]);

        $conf = [
            "valueInputOption" => "RAW",
        ];

        $range = "Задачи!A1:C";

        $rangeinst = new \Google_Service_Sheets_GridRange();
        $rangeinst->setSheetId(0);
        $rangeinst->setStartRowIndex(0);
        $rangeinst->setEndRowIndex(11);
        $rangeinst->setStartColumnIndex(0);
        $rangeinst->setEndColumnIndex(2);

        $merge = New Google_Service_Sheets_MergeCellsRequest();
        $merge->setMergeType('MERGE_COLUMNS');
        $merge->setRange($rangeinst);

        $requestbody = new \Google_Service_Sheets_Request();
        $requestbody->setMergeCells($merge);

        $requestBatchBody = new \Google_Service_Sheets_BatchUpdateSpreadsheetRequest();
        $requestBatchBody->setRequests($requestbody);

        $result = $service->spreadsheets->batchUpdate($spreadsheetId, $requestBatchBody);
        
        dd($result);
   
   }

}