code: public function getSubscriptions()
      {
          if (!$this->isConnected()) {
              $this->debug->alert('WAMP publisher not connected to WAMP router');
              return array();
          }
          $this->publishMeta();
          $this->processExistingData();
          return array(
              'debug.log' => array('onLog', PHP_INT_MAX * -1),
              'errorHandler.error' => 'onError',    // assumes errorhandler is using same dispatcher.. as should be
              'php.shutdown' => array('onShutdown', PHP_INT_MAX * -1),
          );
      }
docs: Return a list of event subscribers
  
  @return array The event names to subscribe to