docs: def launch():
      """Launch the experiment."""
      exp = experiment(db.init_db(drop_all=False))
      exp.log("Launching experiment...", "-----")
      init_db()
      exp.recruiter().open_recruitment(n=exp.initial_recruitment_size)
      session_psiturk.commit()
      session.commit()
  
      return success_response(request_type="launch")