custom_runner

# File lib/spec/runner/options.rb, line 280
      def custom_runner
        return nil unless custom_runner?
        klass_name, arg = ClassAndArgumentsParser.parse(user_input_for_runner)
        runner_type = load_class(klass_name, 'example group runner', '--runner')
        return runner_type.new(self, arg)
      end