code: def _load_countryfile(self,
                           url="https://www.country-files.com/cty/cty.plist",
                           country_mapping_filename="countryfilemapping.json",
                           cty_file=None):
          
  
          cwdFile = os.path.abspath(os.path.join(os.getcwd(), country_mapping_filename))
          pkgFile = os.path.abspath(os.path.join(os.path.dirname(__file__), country_mapping_filename))
  
          # from cwd
          if os.path.exists(cwdFile):
              # country mapping files contains the ADIF identifiers of a particular
              # country since the country-files do not provide this information (only DXCC id)
              country_mapping_filename = cwdFile
          # from package
          elif os.path.exists(pkgFile):
              country_mapping_filename = pkgFile
          else:
              country_mapping_filename = None
  
          if self._download:
              cty_file = self._download_file(url=url)
          else:
              cty_file = os.path.abspath(cty_file)
  
          cty_dict = self._parse_country_file(cty_file, country_mapping_filename)
          self._callsign_exceptions = cty_dict["exceptions"]
          self._prefixes = cty_dict["prefixes"]
          self._callsign_exceptions_index = cty_dict["exceptions_index"]
          self._prefixes_index = cty_dict["prefixes_index"]
  
          return True
docs: Load and process the ClublogXML file either as a download or from file