) ([]grpc.DialOption, error) {
	ctx := context.TODO()
	// If we are using the insecure 15010 don't bother getting a token
	if opts.Plaintext || opts.CertDir != "" {
		return make([]grpc.DialOption, 0), nil
	}
	// Use bearer token
	aud := tokenAudiences
	isMCP := strings.HasSuffix(opts.Xds, ".googleapis.com") || strings.HasSuffix(opts.Xds, ".googleapis.com:443")
	if isMCP {
		// Special credentials handling when using ASM Managed Control Plane.

			req.Body = http.NoBody
			req.GetBody = func() (io.ReadCloser, error) { return http.NoBody, nil }
		}
	}

	if c.newAuthToken != nil {
		req.Header.Set("Authorization", "Bearer "+c.newAuthToken(u.RawQuery))
	}
	req.Header.Set("X-Minio-Time", time.Now().UTC().Format(time.RFC3339))

	if tc, ok := ctx.Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt); ok {