code: def _load_data(self):
          
          ipa_canonical_string_to_ascii_str = dict()
          for line in load_data_file(
              file_path=self.DATA_FILE_PATH,
              file_path_is_relative=True,
              line_format=u"sxA"
          ):
              i_desc, i_ascii = line
              if len(i_ascii) == 0:
                  raise ValueError("Data file '%s' contains a bad line: '%s'" % (self.DATA_FILE_PATH, line))
              key = (variant_to_canonical_string(i_desc),)
              ipa_canonical_string_to_ascii_str[key] = i_ascii[0]
          return ipa_canonical_string_to_ascii_str
docs: Load the Kirshenbaum ASCII IPA data from the built-in database.