How to use the aiozipkin.helpers.make_timestamp function in aiozipkin

def test_make_timestamp():
    ts = make_timestamp()
    assert len(str(ts)) == 16

    ts = make_timestamp(time.time())
    assert len(str(ts)) == 16

def test_make_timestamp():
    ts = make_timestamp()
    assert len(str(ts)) == 16

    ts = make_timestamp(time.time())
    assert len(str(ts)) == 16

def finish(self, ts: OptTs = None,
               exception: Optional[Exception] = None) -> 'Span':
        if exception is not None:
            self.tag(ERROR, str(exception))
        ts = make_timestamp(ts)
        self._record.finish(ts)
        self._tracer._send(self._record)
        return self

def annotate(self, value: str, ts: OptTs = None) -> 'Span':
        ts = make_timestamp(ts)
        self._record.annotate(value, ts)
        return self

def start(self, ts: OptTs = None) -> 'Span':
        ts = make_timestamp(ts)
        self._record.start(ts)
        return self