toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (authorAttributions != null)
'authorAttributions': authorAttributions!,
if (heightPx != null) 'heightPx': heightPx!,
if (name != null) 'name': name!,
if (widthPx != null) 'widthPx': widthPx!,
};