A MessageOccurrenceSpecification specifies the occurrence of Message events, such as sending and receiving of Signals or invoking or receiving of Operation calls. A MessageOccurrenceSpecification is a kind of MessageEnd. Messages are generated either by synchronous Operation calls or asynchronous Signal sends. They are received by the execution of corresponding AcceptEventActions.
A MessageOccurrenceSpecification specifies the occurrence of Message events, such as sending and receiving of Signals or invoking or receiving of Operation calls. A MessageOccurrenceSpecification is a kind of MessageEnd. Messages are generated either by synchronous Operation calls or asynchronous Signal sends. They are received by the execution of corresponding AcceptEventActions.