public void storeLocal(final OutputStream out) throws IOException {
    final Properties p = new Properties();
    for (final String key : this._current.keySet()) {
      p.setProperty(key, get(key));
    }
    p.store(out, null);
  }
Store only those properties defined at this local level

@param out The output stream to write to
@throws IOException If the file can't be found or there is an io error
dss-appconn/appconns/dss-eventchecker-appconn/src/main/java/com/webank/wedatasphere/dss/appconn/eventchecker/utils/Props.java