Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /home/corals/old/vendor/magento/module-customer/Model/Group/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

namespace Magento\Customer\Model\Group;

use Magento\Customer\Model\ResourceModel\Group\Resolver as ResolverResource;

/**
 * Lightweight service for getting current customer group based on customer id
 */
class Resolver
{
    /**
     * @var ResolverResource
     */
    private $resolverResource;

    /**
     * @param ResolverResource $resolverResource
     */
    public function __construct(ResolverResource $resolverResource)
    {
        $this->resolverResource = $resolverResource;
    }

    /**
     * Return customer group id
     *
     * @param int $customerId
     * @return int|null
     */
    public function resolve(int $customerId) : ?int
    {
        return $this->resolverResource->resolve($customerId);
    }
}