func (c *minioNodeCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

// populateAndPublish populates and then publishes the metrics generated by the generator function.
func populateAndPublish(metricsGroups []*MetricsGroupV2, publish func(m MetricV2) bool) {
	for _, mg := range metricsGroups {
		if mg == nil {
			continue
		}
		for _, metric := range mg.Get() {

	c.Assert(err, nil)
	c.Assert(response.StatusCode, http.StatusOK)

	var buffer bytes.Buffer
	// data to be written into buffer.
	data := "1234567890"
	// seed the random number generator once.
	rand.Seed(3)
	// generate a random number between 13 and 200.
	randInt := getRandomRange(13, 200, -1)
	// write into buffer till length of the buffer is greater than the generated random number.