code: private void generateReports(String outputDirectory) {
          logger.entering(outputDirectory);
  
          ClassLoader localClassLoader = this.getClass().getClassLoader();
  
          try (BufferedWriter writer = new BufferedWriter(new FileWriter(outputDirectory + File.separator + "index.html"));
                  BufferedWriter jsonWriter = new BufferedWriter(new FileWriter(outputDirectory + File.separator
                          + "report.json"));
                  BufferedReader templateReader = new BufferedReader(new InputStreamReader(
                          localClassLoader.getResourceAsStream("templates/RuntimeReporter/index.html")));) {
  
              JsonObject reporter = buildJSONReport();
              Gson gson = new GsonBuilder().setPrettyPrinting().create();
              String jsonReport = gson.toJson(reporter);
              jsonWriter.write(jsonReport);
              jsonWriter.newLine();
  
              generateHTMLReport(writer, templateReader, jsonReport);
  
          } catch (IOException | JsonParseException e) {
              logger.log(Level.SEVERE, e.getMessage(), e);
              throw new ReporterException(e);
          }
  
          logger.exiting();
      }
docs: Generate JSON report and HTML report
  
  @param outputDirectory