toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (attestationStatement != null)
'attestationStatement': attestationStatement!,
if (challenge != null) 'challenge': challenge!,
if (keyId != null) 'keyId': keyId!,
if (limitedUse != null) 'limitedUse': limitedUse!,
};