toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (format != null) 'format': format!,
if (key != null) 'key': key!,
if (keySpec != null) 'keySpec': keySpec!,
if (notAfterTime != null) 'notAfterTime': notAfterTime!,
if (notBeforeTime != null) 'notBeforeTime': notBeforeTime!,
};