init method
run once in your main.dart file
FlutterIconNetwork.instance.init(host: "https://bicon.net.solidwallet.io/api/v3", isTestNet: true);
Implementation
Future<void> init({required String host, bool? isTestNet}) async {
this.isTestNet = isTestNet;
this.host = host;
await _initHostAndNetWorkId();
}