TSKSESF2 — Management of event consumer association

The specification of BaseBusinessObject includes inheritance of the
CosNotifyComm::StructuredPushConsumer and StructuredPushSupplier interfaces.
The semantics of StructuredPushSupplier implies association to a single
StructuredProxyPushConsumer, however, the BaseBusinessObject interface is
intended to support multiple concurrent consumers from potentially different
business domains without mandating nor excluding the use of Notification
channels as an implementation mechanisms. To enable the documented
behaviour an explicit factory operation is required through which a
StructuredPushSupplier reference can be exposed for a given consumer.