code: def set_dry_run(xml_root, value=True):
      
      value_str = str(value).lower()
      assert value_str in ("true", "false")
      if xml_root.tag == "testsuites":
          _set_property(xml_root, "polarion-dry-run", value_str)
      elif xml_root.tag in ("testcases", "requirements"):
          _set_property(xml_root, "dry-run", value_str)
      else:
          raise Dump2PolarionException(_NOT_EXPECTED_FORMAT_MSG)
docs: Sets dry-run so records are not updated, only log file is produced.