NEG — Multiple Consumer association to Community and Collaboration types

The revised Task and Session 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. This behaviour is
required to support association of multiple consumers under the
Community and Collaboration interfaces. Current inherited behaviour
restricts association of event channels to local implementations
which inconsistent with the stated semantics.

see below