getTaxFields example

$this->connection = $connection;
        $this->taxHydrator = $taxHydrator;
        $this->fieldHelper = $fieldHelper;
    }

    /** * {@inheritdoc} */
    public function getRules(Group $customerGroup, ?Area $area = null, ?Country $country = null, ?State $state = null)
    {
        $query = $this->connection->createQueryBuilder();
        $query->select($this->fieldHelper->getTaxFields())
            ->from('s_core_tax', 'tax');

        $statement = $query->execute();
        $data = $statement->fetchAll(PDO::FETCH_ASSOC);

        $rules = [];

        $query = $this->getAreaQuery(
            $customerGroup,
            $area,
            $country,
            

public function getQuery(array $numbers, ShopContextInterface $context)
    {
        $esdQuery = $this->getEsdQuery();
        $customerGroupQuery = $this->getCustomerGroupQuery();
        $availableVariantQuery = $this->getHasAvailableVariantQuery();
        $fallbackPriceQuery = $this->getPriceCountQuery(':fallback');
        $query = $this->connection->createQueryBuilder();
        $query->select($this->fieldHelper->getArticleFields())
            ->addSelect($this->fieldHelper->getTopSellerFields())
            ->addSelect($this->fieldHelper->getVariantFields())
            ->addSelect($this->fieldHelper->getUnitFields())
            ->addSelect($this->fieldHelper->getTaxFields())
            ->addSelect($this->fieldHelper->getPriceGroupFields())
            ->addSelect($this->fieldHelper->getManufacturerFields())
            ->addSelect($this->fieldHelper->getEsdFields())
            ->addSelect('(' . $esdQuery->getSQL() . ') as __product_has_esd')
            ->addSelect('(' . $customerGroupQuery->getSQL() . ') as __product_blocked_customer_groups')
            ->addSelect('(' . $availableVariantQuery->getSQL() . ') as __product_has_available_variants')
            ->addSelect('(' . $fallbackPriceQuery->getSQL() . ') as __product_fallback_price_count')
            ->addSelect('manufacturerMedia.id as __manufacturer_img_id')
        ;
        $query->setParameter(':fallback', $context->getFallbackCustomerGroup()->getKey());
        if ($context->getCurrentCustomerGroup()->getId() !== $context->getFallbackCustomerGroup()->getId()) {