code: def open_recruitment(self, n=1):
          
          logger.info("Opening HotAir recruitment for {} participants".format(n))
          recruitments = self.recruit(n)
          message = "Recruitment requests will open browser windows automatically."
  
          return {"items": recruitments, "message": message}
docs: Return initial experiment URL list, plus instructions
          for finding subsequent recruitment events in experiemnt logs.