BaseGrid::isSumCalculation

protected function isSumCalculation(): bool
{
	$calculateField = $this->getFormElement('calculate');
	$calculateValue = $calculateField ? $calculateField->getValue() : null;
	$calculationFields = [
		self::WHAT_WILL_CALCULATE_ORDER_SUM,
		self::WHAT_WILL_CALCULATE_ORDER_WON_SUM,
		self::WHAT_WILL_CALCULATE_ORDER_LOSES_SUM,
		self::WHAT_WILL_CALCULATE_ORDER_AVERAGE_SUM,
		self::WHAT_WILL_CALCULATE_ORDER_DISCOUNT_SUM
	];
	return in_array($calculateValue, $calculationFields, true);
}