/**
* Calculate rate based on default parameter
*
* @param int $productTaxClassID
* @param int|null $customerId
* @param string|null $storeId
* @param bool $isDefault
* @return float
*/
protected function getRate($productTaxClassID, $customerId = null, $storeId = null, $isDefault = false)
{
if (is_null($storeId)) {
$storeId = $this->storeManager->getStore()->getStoreId();
}
if (!$isDefault) {
$addressRequestObject = $this->calculator->getRateRequest(null, null, null, $storeId, $customerId);
} else {
$addressRequestObject = $this->calculator->getDefaultRateRequest($storeId, $customerId);
}
$addressRequestObject->setProductClassId($productTaxClassID);
return $this->calculator->getRate($addressRequestObject);
}
