code: public static LocalCall<Boolean> rmdir(String path) {
          return new LocalCall<>("file.rmdir", Optional.of(Collections.singletonList(path)),
                  Optional.empty(), new TypeToken<Boolean>(){});
      }
docs: Removes the specified directory
  <p>
  Fails if the directory is not empty
  
  @param path  Path to directory
  @return      The {@link LocalCall} object to make the call