But if you have a custom class or service that's operating independent of the main thread, perhaps in an isolate, like a FileProcessor for instance, this is where Finalizers would aid with memory leaks.

Flutter Tip - Day 4: If you want to clean up Dart objects from memory when they are no longer needed, use Finalizers! It's super useful esp. if you want to write your own cleanup logic or when the object is of your own custom class, e.g. FileProcessor, Database, etc. #flutter

ちょっと無理矢理ですが以前にFileProcessorを継承して実装したことあります。 qiita.com/yamasakih/items/11…

FileProcessor, cercare file in base alle preferenze definite dall’utente ed agire su di essi: Se siete alle pre... geekiss.im/sHoPs1