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hasReturned

The term hasReturned refers to an OCL operation that returns True if the operation call wrapped in a given OclMessage instance has finished executing and returned a value.


hasSent

The term hasSent is an OCL operator that specifies whether communication has taken place in the form of a particular message being sent to a given object.


high-level transition

A high-level transition is a transition originating within a composite state.
 

history state

A history state is a pseudostate that indicates that the enclosing composite state remembers a previously active substate after the associated object leaves that state.

The UML defines two kinds of history states: shallow history and deep history.



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