code: public static Request classes(Computer computer, Class<?>... classes) {
          try {
              AllDefaultPossibilitiesBuilder builder = new AllDefaultPossibilitiesBuilder();
              Runner suite = computer.getSuite(builder, classes);
              return runner(suite);
          } catch (InitializationError e) {
              return runner(new ErrorReportingRunner(e, classes));
          }
      }
docs: Create a <code>Request</code> that, when processed, will run all the tests
  in a set of classes.
  
  @param computer Helps construct Runners from classes
  @param classes the classes containing the tests
  @return a <code>Request</code> that will cause all tests in the classes to be run