code: public static Benchmark setUpBenchmark(final String[] classes, final Benchmark benchmark) throws ClassNotFoundException {
          for (final String each : classes) {
              benchmark.add(Class.forName(each));
          }
          return benchmark;
      }
docs: Setting up an existing benchmark with the given number of class-files
  
  @param classes   to be benched
  @param benchmark to be set up
  @return the same {@link Benchmark} object with the classes
  @throws ClassNotFoundException thrown if class was not found.