docs: def finish(self):
          """Stop coverage, save data to file and set the list of coverage objects to report on."""
  
          self.unset_env()
          self.cov.stop()
          self.cov.combine()
          self.cov.save()
          node_desc = self.get_node_desc(sys.platform, sys.version_info)
          self.node_descs.add(node_desc)