code: def _integrate_mpwrap(ts_and_pks, integrate, fopts):
      
      ts, tpks = ts_and_pks
      pks = integrate(ts, tpks, **fopts)
      # for p in pks:
      #     p.info['mz'] = str(ts.name)
      return pks
docs: Take a zipped timeseries and peaks found in it
      and integrate it to return peaks. Used to allow
      multiprocessing support.