eZ\Publish\Core\Repository\RoleService::loadRole PHP Method

    public function loadRole($id)
    {
        if ($this->repository->hasAccess('role', 'read') !== true) {
            throw new UnauthorizedException('role', 'read');
        }
        $spiRole = $this->userHandler->loadRole($id);
        return $this->roleDomainMapper->buildDomainRoleObject($spiRole);
    }