ent source operation to discontinue connectivity.
  Stock::StockNameConsumer unsubscribe_notifier (in Cookie ck)
    raises (Invalid_Subscription);

  /// Factory operation to return StockQuoter object reference.
  StockQuoter provide_quoter_info ()
    raises (Invalid_Subscription);

  /// Shutdown the object and terminate the application.
  oneway void shutdown ();

  /// Controls rate of updates.
  attribute long notification_rate;
};
</PRE>

This is the interface definition for Stock Distributor servers