case "GetBucketLocation":
			// Register GetBucketLocation handler.
			bucket.Methods(http.MethodGet).HandlerFunc(api.GetBucketLocationHandler).Queries("location", "")
		case "HeadBucket":
			// Register HeadBucket handler.
			bucket.Methods(http.MethodHead).HandlerFunc(api.HeadBucketHandler)
		case "DeleteMultipleObjects":
			// Register DeleteMultipleObjects handler.

// return responses such as 404 Not Found and 403 Forbidden.
func (api objectAPIHandlers) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "HeadBucket")

	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))

	vars := mux.Vars(r)
	bucket := vars["bucket"]

	objectAPI := api.ObjectAPI()
	if objectAPI == nil {