// execute the HTTP request.
	response, err = s.client.Do(request)
	c.Assert(err, nil)
	// validating the error response.
	verifyError(c, response, "InvalidArgument", "Argument maxKeys must be an integer between 0 and 2147483647", http.StatusBadRequest)

	// create listObjectsV2 request with invalid value of max-keys parameter. max-keys is set to -2.

	bucketMetricNamespace    MetricNamespace = "minio_bucket"
	clusterMetricNamespace   MetricNamespace = "minio_cluster"
	healMetricNamespace      MetricNamespace = "minio_heal"
	interNodeMetricNamespace MetricNamespace = "minio_inter_node"
	nodeMetricNamespace      MetricNamespace = "minio_node"
	minioMetricNamespace     MetricNamespace = "minio"
	s3MetricNamespace        MetricNamespace = "minio_s3"
)

const (