code: def merge(batch, results):
      """
      Merge clumped results files together
      """
      merger = batch.new_job(name="merge-results")
      merger.image("ubuntu:22.04")
      if results:
          merger.command(
              f"""
  head -n 1 {results[0]} > {merger.ofile}
  for result in {" ".join(results)}
  do
      tail -n +2 "$result" >> {merger.ofile}
  done
  sed -i -e '/^$/d' {merger.ofile}
  """
          )
      return merger
  
label_desc: Use image node_id 3 for calling a global function with example usage: merge(batch, results) and returns: merger