code: public FramesV3 export(int version, FramesV3 s) {
      Frame fr = getFromDKV("key", s.frame_id.key());
      Log.info("ExportFiles processing (" + s.path + ")");
      s.job = new JobV3(Frame.export(fr, s.path, s.frame_id.key().toString(), s.force, s.num_parts));
      return s;
    }
docs: Export a single frame to the specified path.