R838 - modelint/shlaer-mellor-metamodel GitHub Wiki
R838 / 1:1c
Lifecycle Activity obtains executing instance from exactly one Single Instance Flow
Single Instance Flow delivers executing instance to zero or one Lifecycle Activity
Each Lifecycle Activity has access to the executing instance (the instance executing the Activity during runtime). This is exactly one instance, so it is delivered via a Single Instance Flow.
Any given Single Instance Flow may or may not be the one delivering the executing instance reference.