meds-processor, p3, s2

HzzoExcelParser.cs

public async Task<ISet<HzzoMedsDownloadDto>> Run(ISet<HzzoMedsDownloadDto> meds)
{
  await Task.WhenAll(
    // NOTE: due to excel docs designed in different ways, we do this separation of work
    StartLongRunning(() => ParsePrimaryListsStartingWith2014_02(meds)),
    StartLongRunning(() => ParseSupplementaryListsStartingWith2014_02(meds)),
    StartLongRunning(() => ParsePrimaryListsUpTo2014_01(meds)),
    StartLongRunning(() => ParseSupplementaryListsUpTo2014_01(meds))
  );

  return meds;
}

Task StartLongRunning(Action a) =>
  Task.Factory.StartNew(a, TaskCreationOptions.LongRunning);