code: def add_job(self, job, merged=False, widened=False):
          
  
          job_type = ''
          if merged:
              job_type = 'merged'
          elif widened:
              job_type = 'widened'
          self.jobs.append((job, job_type))
docs: Appended a new job to this JobInfo node.
          :param job: The new job to append.
          :param bool merged: Whether it is a merged job or not.
          :param bool widened: Whether it is a widened job or not.