code: @Nonnull
      public static String getResults() {
          StringBuilder sb = new StringBuilder();
          for (Entry<String, Counter> e : CUMULATED.entrySet()) {
              sb.append(e.getValue().getSummary())
                .append(", (")
                .append(e.getValue().getCount() / MILLISECONDS_PER_SECOND)
                .append(" s)")
                .append(System.lineSeparator());
          }
          return sb.toString();
      }
docs: Get profiling results as string.