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Extend![]() |
An extend relationship specifies that the behaviors
defined in one use case (extension use case) can be inserted into another
use case (base use case). The extend relationship signifies that the
incorporation of the extension use case is conditional, meaning its execution
is dependent on what has happened while executing the base use case.
You can define the exact location where the extension use case is inserted
in the documentation for the base use case.
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