class Runner implements Job
  public method execute(code as byte) as boolean
    if code = 0
      return false
    else
      return true
    end if
  end method
end class

interface Job
  method execute(code as byte) as boolean
end interface

program Main
  var runner as Runner
  var job as Job
  var ok as boolean
  runner = new Runner()
  job = runner
  ok = job.execute(1)
  print ok
  delete job
end program