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An activity diagram like that will also be generated, if you choose option import to new model on importing the REST service description.
For a detailed overview on all REST parameters, refer to REST.

HTTP Headers

REST Adapter Components

The location of the REST service and other settings to access the service are provided in the component diagram on a REST alias. You can link these definitions in the component diagram to the implementation in an activity diagram via the tagged value alias on the corresponding activity.

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