text: from toil.common import Toil
  from toil.job import Job
  
  def helloWorld(job, message, memory="2G", cores=2, disk="3G"):
      job.log("Hello world, I have a message: {}".format(message))
  
  if __name__=="__main__":
      options = Job.Runner.getDefaultOptions("./toilWorkflowRun")
      options.logLevel = "INFO"
      options.clean = "always"
  
      j1 = Job.wrapJobFn(helloWorld, "first")
      j2 = Job.wrapJobFn(helloWorld, "second or third")
      j3 = Job.wrapJobFn(helloWorld, "second or third")
      j4 = Job.wrapJobFn(helloWorld, "last")
      j1.addChild(j2)
      j1.addChild(j3)
      j1.addFollowOn(j4)
  
      with Toil(options) as toil:
          toil.start(j1)