public function initialize(AgaviContext $ctx, AgaviParameterHolder $p)
 {
     parent::initialize($context, $p);
     $time = $p->getParameter("default_timespan", AgaviConfig::get("modukle.api.sla_settings,default_timespan"));
     $this->defaultStartDate = @strtotime($time);
     if ($this->defaultStartDate === false) {
         $ctx->getLoggerManager()->log("Warning: Invalid SLA default timespan " + $time + " provided, using -90 days");
         $this->defaultStartDate = @strtotime("-90 days");
     }
     if ($this->defaultStartDate === false) {
         throw new AppKitException("Couldn't set sla default_timespan");
     }
 }