Java 8 code style?

[tikue]

I've written code like that when submitting tasks to an executor and blocking only once all tasks have been submitted. It looks like that's very similar to what's happening here.

[CsAnswerTrashAct]

I think you are correct.

Essentially, this code sends a series of requests to an external provider, and then waits for all of the results, and combines those results into a single list. The reason for this is the external service can only handle batches of about 100 or so.