How to use the apiritif.samples.Sample function in apiritif

def _fill_sample(self, report, call, item, status):
        filename, lineno, _ = report.location

        if self._sample is None:
            self._sample = Sample()
            self._sample.test_case = item.name
            self._sample.test_suite = item.module.__name__
            self._sample.start_time = call.start
            self._sample.extras = {"filename": filename, "lineno": lineno}

        self._sample.status = status
        self._sample.duration = time.time() - self._sample.start_time

        if call.excinfo is not None:
            self._sample.error_msg = call.excinfo.exconly().strip()
            self._sample.error_trace = "\n".join(traceback.format_tb(call.excinfo.tb)).strip()
            if call.excinfo.errisinstance(AssertionError):
                self._sample.add_assertion(call.excinfo.exconly())
                self._sample.set_assertion_failed(call.excinfo.exconly(), str(call.excinfo.value),
                                                  str(call.excinfo.getrepr(style="native")))

def end_test(self, name, attrs):
        # TODO: include keywords as subsamples
        sample = Sample()
        sample.test_case = name
        sample.test_suite = self._current_suite
        sample.start_time = time.mktime(datetime.strptime(attrs['starttime'], '%Y%m%d %H:%M:%S.%f').timetuple())
        sample.duration = float(attrs['elapsedtime']) / 1000.0
        if attrs['status'] == 'PASS':
            sample.status = 'PASSED'
        else:
            sample.status = 'FAILED'
            message = attrs['message']
            if '\n' in message:
                lines = message.split('\n')
                sample.error_msg = lines[0]
                sample.error_trace = message
            else:
                sample.error_msg = message
        self._report_sample(sample)