type crypto/ed25519.Options

4 uses

	crypto/ed25519 (current package)
		ed25519.go#L91: 	if opts, ok := opts.(*Options); ok {
		ed25519.go#L121: type Options struct {
		ed25519.go#L131: func (o *Options) HashFunc() crypto.Hash { return o.Hash }
		ed25519.go#L273: func VerifyWithOptions(publicKey PublicKey, message, sig []byte, opts *Options) error {