getMap method
Implementation
@override
Map<String, String> getMap(String key) => {
...super.getMap(key),
QueryParameter.part.name: parts.map((part) => part.name).join(','),
if (forUsername != null) QueryParameter.forUsername.name: forUsername!,
if (managedByMe != null)
QueryParameter.managedByMe.name: "$managedByMe",
if (mine != null) QueryParameter.mine.name: "$mine",
};