R561 - modelint/shlaer-mellor-metamodel GitHub Wiki

R561 / Generalization

Delegated Event is a Root Delegated Event or a Forwarded Delegated Event

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The distinction here is between the Superclass root and forward delegation to some intermediate Subclass.

All Delegated Events, by definition, are responded to by some other Subclass. (See the diagram under Root Delegated Event)