code: def main():
      
      # Define Parser object and add to toil
      parser = build_parser()
      Job.Runner.addToilOptions(parser)
      args = parser.parse_args()
      # Store inputs from argparse
      inputs = {'genetorrent': args.genetorrent,
                'genetorrent_key': args.genetorrent_key,
                'ssec': args.ssec,
                's3_dir': args.s3_dir}
      # Sanity checks
      if args.ssec:
          assert os.path.isfile(args.ssec)
      if args.genetorrent:
          assert os.path.isfile(args.genetorrent)
      if args.genetorrent_key:
          assert os.path.isfile(args.genetorrent_key)
      samples = parse_genetorrent(args.genetorrent)
      # Start pipeline
      # map_job accepts a function, an iterable, and *args. The function is launched as a child
      # process with one element from the iterable and *args, which in turn spawns a tree of child jobs.
      Job.Runner.startToil(Job.wrapJobFn(map_job, download_and_transfer_sample, samples, inputs), args)
docs: This is a Toil pipeline to transfer TCGA data into an S3 Bucket
  
      Data is pulled down with Genetorrent and transferred to S3 via S3AM.