MatcherFunc(func(r *http.Request, _ *mux.RouteMatch) bool {
				return isRequestPostPolicySignatureV4(r)
			}).
			HandlerFunc(s3APIMiddleware(api.PostPolicyBucketHandler, traceHdrsS3HFlag))
		// DeleteMultipleObjects
		router.Methods(http.MethodPost).
			HandlerFunc(s3APIMiddleware(api.DeleteMultipleObjectsHandler)).
			Queries("delete", "")
		// DeleteBucketPolicy
		router.Methods(http.MethodDelete).