code: public static TestContainer createContainer(String configurationClassName) throws Exception {
          Option[] options = getConfigurationOptions(configurationClassName);
          ExamSystem system = DefaultExamSystem.create(options);
          TestContainer testContainer = PaxExamRuntime.createContainer(system);
          testContainer.start();
          return testContainer;
      }
docs: Creates and starts a test container using options from a configuration class.
  
  @param configurationClassName
  fully qualified class name of a configuration class.
  @return started test container
  @throws Exception when options cannot be parsed