Class NotifySubscribePOATie

The NotifySubscribe interface supports an operation which allows a consumer of notifications to inform suppliers of notifications of the types of notifications it wishes to receive. It is intended to be an abstract interface which is inherited by all Notification Service supplier interfaces. In essence, its main purpose is to enable notification consumers to inform suppliers of the types of notifications that are of interest to them, ultimately enabling the suppliers to avoid supplying notifications that are not of interest to any consumer.