code: public static LocalCall<String> chmod(String path, String mode) {
          return new LocalCall<>("file.set_mode", Optional.of(Arrays.asList(path, mode)),
                  Optional.empty(), new TypeToken<String>(){});
      }
docs: Set the mode of a file
  
  @param path  File or directory of which to set the mode
  @param mode  Mode to set the path to
  @return      The {@link LocalCall} object to make the call