code: def respth2ck(argv=None):
      
      parser = ArgumentParser(
          description='Convert a ReSpecTh XML file to a ChemKED YAML file.'
          )
      parser.add_argument('-i', '--input',
                          type=str,
                          required=True,
                          help='Input filename (e.g., "file1.yaml")'
                          )
      parser.add_argument('-o', '--output',
                          type=str,
                          required=False,
                          default='',
                          help='Output filename (e.g., "file1.xml")'
                          )
      parser.add_argument('-fa', '--file-author',
                          dest='file_author',
                          type=str,
                          required=False,
                          default='',
                          help='File author name to override original'
                          )
      parser.add_argument('-fo', '--file-author-orcid',
                          dest='file_author_orcid',
                          type=str,
                          required=False,
                          default='',
                          help='File author ORCID'
                          )
  
      args = parser.parse_args(argv)
  
      filename_ck = args.output
      filename_xml = args.input
  
      properties = ReSpecTh_to_ChemKED(filename_xml, args.file_author, args.file_author_orcid,
                                       validate=True)
  
      # set output filename and path
      if not filename_ck:
          filename_ck = os.path.join(os.path.dirname(filename_xml),
                                     os.path.splitext(os.path.basename(filename_xml))[0] + '.yaml'
                                     )
  
      with open(filename_ck, 'w') as outfile:
          yaml.dump(properties, outfile, default_flow_style=False)
      print('Converted to ' + filename_ck)
docs: Command-line entry point for converting a ReSpecTh XML file to a ChemKED YAML file.