code: def Jobs(self, crawlId=None):
          
          crawlId = crawlId if crawlId else defaultCrawlId()
          return JobClient(self.server, crawlId, self.confId)
docs: Create a JobClient for listing and creating jobs.
          The JobClient inherits the confId from the Nutch client.
  
          :param crawlId: crawlIds to use for this client.  If not provided, will be generated
           by nutch.defaultCrawlId()
          :return: a JobClient