code: public static void initReportData(List<ISuite> suites) {
          logger.entering(suites);
          if (!isReportInitialized) {
              for (ISuite suite : suites) {
                  Map<String, ISuiteResult> r = suite.getResults();
                  for (ISuiteResult r2 : r.values()) {
                      ITestContext tc = r2.getTestContext();
                      ITestNGMethod[] methods = tc.getAllTestMethods();
                      for (ITestNGMethod method : methods) {
                          method.setId(UUID.randomUUID().toString());
                      }
                  }
              }
              isReportInitialized = true;
          }
          logger.exiting();
      }
docs: init the uniques id for the methods , needed to create the navigation.
  
  @param suites