code: def issueQueingServiceJobs(self):
          
          while len(self.serviceJobsToBeIssued) > 0 and self.serviceJobsIssued < self.config.maxServiceJobs:
              self.issueJob(self.serviceJobsToBeIssued.pop())
              self.serviceJobsIssued += 1
          while len(self.preemptableServiceJobsToBeIssued) > 0 and self.preemptableServiceJobsIssued < self.config.maxPreemptableServiceJobs:
              self.issueJob(self.preemptableServiceJobsToBeIssued.pop())
              self.preemptableServiceJobsIssued += 1
docs: Issues any queuing service jobs up to the limit of the maximum allowed.