RestService :: deleteActivityInternal: Bitrix method

      
<?php 
//  Bitrix\Bizproc\RestService :: deleteActivityInternal()
//  /dist/bitrix/modules/bizproc/lib/restservice.php:281

    private static function deleteActivityInternal($params, $server, $isRobot = false)
    {
        if(!$server->getClientId())
        {
            throw new AccessException("Application context required");
        }

        $params = array_change_key_case($params, CASE_UPPER);
        self::checkAdminPermissions();
        self::validateActivityCode($params['CODE']);
        $params['APP_ID'] = $server->getClientId();
        $internalCode = self::generateInternalCode($params);

        $iterator = RestActivityTable::getList(array(
            'select' => array('ID'),
            'filter' => array(
                '=INTERNAL_CODE' => $internalCode,
                '=IS_ROBOT' => $isRobot ? 'Y' : 'N'
            )
        ));
        $result = $iterator->fetch();
        if (!$result)
        {
            throw new RestException('Activity or Robot not found!', self::ERROR_ACTIVITY_NOT_FOUND);
        }
        RestActivityTable::delete($result['ID']);

        return true;
    }