docs: private Response serveOneOrAll(Map<String, Frame> framesMap) {
      // returns empty sets if !this.find_compatible_models
      Pair<Map<String, Model>, Map<String, Set<String>>> models_info = fetchModels();
      Map<String, Model> all_models = models_info.getFirst();
      Map<String, Set<String>> all_models_cols = models_info.getSecond();
  
      Map<String, FrameSummary> frameSummaries = Frames.generateFrameSummaries(null, framesMap, find_compatible_models, all_models, all_models_cols);
  
      Map resultsMap = new LinkedHashMap();
      resultsMap.put("frames", frameSummaries);
  
      // If find_compatible_models then include a map of the Model summaries.  Should we put this on a separate switch?
      if (this.find_compatible_models) {
        Set<String> all_referenced_models = new TreeSet<String>();
  
        for (Map.Entry<String, FrameSummary> entry: frameSummaries.entrySet()) {
          FrameSummary summary = entry.getValue();
          all_referenced_models.addAll(summary.compatible_models);
        }
  
        Map<String, ModelSummary> modelSummaries = Models.generateModelSummaries(all_referenced_models, all_models, false, null, null);
        resultsMap.put("models", modelSummaries);
      }
  
      // TODO: temporary hack to get things going
      String json = gson.toJson(resultsMap);
  
      JsonObject result = gson.fromJson(json, JsonElement.class).getAsJsonObject();
      return Response.done(result);
    }