CCourse::IsCertificatesExists

static function IsCertificatesExists($courseId)
{
	// Check certificates (if exists => forbid removing course)
	$certificate = CCertification::GetList(Array(), Array("COURSE_ID" => $courseId, 'CHECK_PERMISSIONS' => 'N'));
	if ( ($certificate === false) || ($certificate->GetNext()) )
		return true;
	else
		return false;
}