toJson method
Implementation
@override
Map<String, Object?> toJson() => {
if (deliveries != null) "deliveries": encodeValue(deliveries),
if (documentKind != null) "document_kind": encodeValue(documentKind),
if (documentUrl != null) "document_url": encodeValue(documentUrl),
if (failedChannels != null)
"failed_channels": encodeValue(failedChannels),
if (failures != null) "failures": encodeValue(failures),
if (sentChannels != null) "sent_channels": encodeValue(sentChannels),
};