code: def _generate_domain():
          
  
          # Check for LSID domain setting file
          try:
              user_dir = str(pathlib.Path.home())
              jupyter_dir = os.path.join(user_dir, '.jupyter')
              domain_path = os.path.join(jupyter_dir, 'lsid_domain')
              with open(domain_path, 'r') as domain_file:
                  domain = str(domain_file.read()).strip()
              if domain is not None and domain != '':
                  return domain
          except:
              # Ignore exceptions, simply fall back to the domain name
              pass
  
          # If this fails, return the fully qualified domain name
          return socket.getfqdn()
docs: Generate an LSID domain based off a setting file or the hostname
          :return: string