dispose method
Implementation
Future<void> dispose() async {
if (_disposed) return;
_disposed = true;
final iso = _isolate;
_isolate = null;
if (iso != null) await iso.dispose();
}
Future<void> dispose() async {
if (_disposed) return;
_disposed = true;
final iso = _isolate;
_isolate = null;
if (iso != null) await iso.dispose();
}