toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (kind != null) 'kind': kind!,
if (producerProjectNumber != null)
'producerProjectNumber': producerProjectNumber!,
if (recaptchaSiteKey != null) 'recaptchaSiteKey': recaptchaSiteKey!,
if (recaptchaStoken != null) 'recaptchaStoken': recaptchaStoken!,
};