It creates two thread, and waits for both of them to finish. It's non-blocking invocations (async), so no threads are blocked while it's waiting for IO. Remove the join, and it no longer waits. The result becomes additional nodes below the http.get invocations. You can run it through the "Evaluator" in the Magic dashboard to see its result ...
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It creates two thread, and waits for both of them to finish. It's non-blocking invocations (async), so no threads are blocked while it's waiting for IO. Remove the join, and it no longer waits. The result becomes additional nodes below the http.get invocations. You can run it through the "Evaluator" in the Magic dashboard to see its result ...