eZ\Bundle\EzPublishCoreBundle\Features\Context\UserContext::checkUserExistenceByEmail PHP Метод

    public function checkUserExistenceByEmail($email, $parentGroupName = null)
    {
        $existingUsers = $this->userService->loadUsersByEmail($email);
        if (count($existingUsers) == 0) {
            return false;
        }
        if ($parentGroupName) {
            foreach ($existingUsers as $user) {
                $userGroups = $this->userService->loadUserGroupsOfUser($user);
                foreach ($userGroups as $userGroup) {
                    if ($userGroup->getFieldValue('name') == $parentGroupName) {
                        return true;
                    }
                }
            }
        }
        return false;
    }