code: public static boolean stampVersion(JsonDBConfig dbConfig, File f, String version) {
  
      FileOutputStream fos = null;
      OutputStreamWriter osr = null;
      BufferedWriter writer = null;
      try {
        fos = new FileOutputStream(f);
        osr = new OutputStreamWriter(fos, dbConfig.getCharset());
        writer = new BufferedWriter(osr);
  
        String versionData = dbConfig.getObjectMapper().writeValueAsString(new SchemaVersion(version));
        writer.write(versionData);
        writer.newLine();
      } catch (JsonProcessingException e) {
        logger.error("Failed to serialize SchemaVersion to Json string", e);
        return false;
      } catch (IOException e) {
        logger.error("Failed to write SchemaVersion to the new .json file {}", f, e);
        return false;
      } finally {
        try {
          writer.close();
        } catch (IOException e) {
          logger.error("Failed to close BufferedWriter for new collection file {}", f, e);
        }
        try {
          osr.close();
        } catch (IOException e) {
          logger.error("Failed to close OutputStreamWriter for new collection file {}", f, e);
        }
        try {
          fos.close();
        } catch (IOException e) {
          logger.error("Failed to close FileOutputStream for new collection file {}", f, e);
        }
      }
      return true;
    }
docs: Utility to stamp the version into a newly created .json File
  This method is expected to be invoked on a newly created .json file before it is usable.
  So no locking code required.
  
  @param dbConfig  all the settings used by Json DB
  @param f  the target .json file on which to stamp the version
  @param version  the actual version string to stamp
  @return true if success.