toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (body != null) 'body': body!,
if (format != null) 'format': format!,
if (from != null) 'from': from!,
if (fromDisplayName != null) 'fromDisplayName': fromDisplayName!,
if (replyTo != null) 'replyTo': replyTo!,
if (subject != null) 'subject': subject!,
};