code: public static Result runClasses(Computer computer, Class<?>... classes) {
          return new JUnitCore().run(computer, classes);
      }
docs: Run the tests contained in <code>classes</code>. Write feedback while the tests
  are running and write stack traces for all failed tests after all tests complete. This is
  similar to {@link #main(String[])}, but intended to be used programmatically.
  
  @param computer Helps construct Runners from classes
  @param classes  Classes in which to find tests
  @return a {@link Result} describing the details of the test run and the failed tests.