App\services\ImportService::saveData PHP Method

    private function saveData($source, $entityType, $row, $data_index)
    {
        $data = $this->processedRows[$data_index];
        $entity = $this->{"{$entityType}Repo"}->save($data);
        // update the entity maps
        $mapFunction = 'add' . ucwords($entity->getEntityType()) . 'ToMaps';
        $this->{$mapFunction}($entity);
        // if the invoice is paid we'll also create a payment record
        if ($entityType === ENTITY_INVOICE && isset($data['paid']) && $data['paid'] > 0) {
            $this->createPayment($source, $row, $data['client_id'], $entity->id);
        }
        return $entity;
    }