@Override
 public void writeDisplaySettings() {
   for (MultipageTiffReader r : new HashSet<MultipageTiffReader>(tiffReadersByLabel_.values())) {
     try {
       r.rewriteDisplaySettings(displayAndComments_.getJSONArray("Channels"));
       r.rewriteComments(displayAndComments_.getJSONObject("Comments"));
     } catch (JSONException ex) {
       ReportingUtils.logError("Error writing display settings");
     } catch (IOException ex) {
       ReportingUtils.logError(ex);
     }
   }
 }