MAJBuilder constructor
Implementation
MAJBuilder({
Key? key,
required this.root,
this.mapKey = MAJProvider.defaultMapKey,
}) : super(key: key) {
// add map key to MAJNode.sharedData if doesn't already exist
if (!MAJNode.sharedData.containsKey(mapKey)) {
MAJNode.sharedData[mapKey] = {};
}
}