save($filename); return $filename; } public function getId(): string { return 'csv'; } protected function setDuration(Worksheet $sheet, $column, $row, $duration) { $sheet->setCellValueByColumnAndRow($column, $row, sprintf('=%s', $duration)); } protected function setRateStyle(Worksheet $sheet, $column, $row, $rate, $currency) { if ($rate === 0.00) { return; } parent::setRateStyle($sheet, $column, $row, $rate, $currency); } }