toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (downloadUri != null) 'downloadUri': downloadUri!,
if (expireTime != null) 'expireTime': expireTime!,
if (modelFormat != null) 'modelFormat': modelFormat!,
if (sizeBytes != null) 'sizeBytes': sizeBytes!,
};