eZ\Publish\Core\Repository\UserService::loadUser PHP Method

    public function loadUser($userId)
    {
        /** @var \eZ\Publish\API\Repository\Values\Content\Content $content */
        $content = $this->repository->getContentService()->internalLoadContent($userId);
        // Get spiUser value from Field Value
        foreach ($content->getFields() as $field) {
            if (!$field->value instanceof UserValue) {
                continue;
            }
            /** @var \eZ\Publish\Core\FieldType\User\Value $value */
            $value = $field->value;
            $spiUser = new SPIUser();
            $spiUser->id = $value->contentId;
            $spiUser->login = $value->login;
            $spiUser->email = $value->email;
            $spiUser->hashAlgorithm = $value->passwordHashType;
            $spiUser->passwordHash = $value->passwordHash;
            $spiUser->isEnabled = $value->enabled;
            $spiUser->maxLogin = $value->maxLogin;
            break;
        }
        // If for some reason not found, load it
        if (!isset($spiUser)) {
            $spiUser = $this->userHandler->load($userId);
        }
        return $this->buildDomainUserObject($spiUser, $content);
    }