code: func (b *Bundler) VerifyOptions() x509.VerifyOptions {
  	return x509.VerifyOptions{
  		Roots:         b.RootPool,
  		Intermediates: b.IntermediatePool,
  		KeyUsages:     b.opts.keyUsages,
  	}
  }
docs: // VerifyOptions generates an x509 VerifyOptions structure that can be
  // used for verifying certificates.