rec := httptest.NewRecorder()
	// construct HTTP request for DELETE bucket.
	req, err := newTestSignedRequestV4(http.MethodDelete, getBucketLocationURL("", bucketName), 0, nil, credentials.AccessKey, credentials.SecretKey, nil)
	if err != nil {
		t.Fatalf("Test %s: Failed to create HTTP request for RemoveBucketHandler: <ERROR> %v", instanceType, err)
	}