code: private static String getKey(Object... objects) {
      Object[] args = new Object[objects.length + 1];
      args[0] = LineageEventBuilder.LIENAGE_EVENT_NAMESPACE;
      System.arraycopy(objects, 0, args, 1, objects.length);
      return LineageEventBuilder.getKey(args);
    }
docs: Prefix all keys with {@link LineageEventBuilder#LIENAGE_EVENT_NAMESPACE}