toJson method
Implementation
@override
Map<String, Object?> toJson() => {
if (requestMeta != null) "request_meta": encodeValue(requestMeta),
if (messageTemplate != null)
"message_template": encodeValue(messageTemplate),
if (email != null) "email": encodeValue(email),
if (purpose != null) "purpose": encodeValue(purpose),
if (sender != null) "sender": encodeValue(sender),
"recipients": encodeValue(recipients),
};