code: public static List<URI> uris(AbstractConfig config, String key) {
      List<URI> result = new ArrayList<>();
      List<String> input = config.getList(key);
      for (String s : input) {
        result.add(uri(key, s));
      }
      return ImmutableList.copyOf(result);
    }
docs: Method is used to retrieve a list of URI(s) from a configuration key.
  
  @param config Config to read
  @param key    Key to read
  @return URI for the value.