code: private void loadFromClasspath() {
          URL url = null;
          try {
              // this is the new location of the file, working on Java 8, Java 9 class path and Java 9 module path
              ClassLoader loader = Thread.currentThread().getContextClassLoader();
              if (loader == null) {
                  loader = RenameHandler.class.getClassLoader();
              }
              if (LOG) {
                  System.err.println("Loading from classpath: " + loader);
              }
              Enumeration<URL> en = loader.getResources("META-INF/org/joda/convert/Renamed.ini");
              while (en.hasMoreElements()) {
                  url = en.nextElement();
                  if (LOG) {
                      System.err.println("Loading file: " + url);
                  }
                  List<String> lines = loadRenameFile(url);
                  parseRenameFile(lines, url);
              }
          } catch (Exception ex) {
              if (LOG) {
                  ex.printStackTrace(System.err);
              }
              throw new IllegalStateException("Unable to load Renamed.ini: " + url + ": " + ex.getMessage(), ex);
          }
      }
docs: loads config files