code: @SuppressWarnings("unused") // called through reflection by RequestServer
    public FramesV3 fetch(int version, FramesV3 s) {
      FramesV3 frames = doFetch(version, s);
  
      // Summary data is big, and not always there: null it out here.  You have to call columnSummary
      // to force computation of the summary data.
      for (FrameBaseV3 a_frame: frames.frames) {
        ((FrameV3)a_frame).clearBinsField();
      }
  
      return frames;
    }
docs: Return a single frame.