code: static void saveLastExecVersion(@Nonnull String version) {
          File lastExecVersionFile = getLastExecVersionFile();
          try {
              FileUtils.write(lastExecVersionFile, version);
          } catch (IOException e) {
              LOGGER.log(SEVERE, "Failed to save " + lastExecVersionFile.getAbsolutePath(), e);
          }
      }
docs: Save a specific version as the last execute version.
  @param version The version to save.