toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (imageThumbnail != null) 'imageThumbnail': imageThumbnail!,
if (imageUri != null) 'imageUri': imageUri!,
if (mimeType != null) 'mimeType': mimeType!,
if (signedUri != null) 'signedUri': signedUri!,
};