Used on a non-mockito object

```dart
class Listener extends Mock {
void call(T? previous, T next);
}

void main() {
ProviderContainer makeProviderContainer() {
final ProviderContainer container = ProviderContainer(
overrides: [
secureStorageServiceProvider.overrideWithValue(mockSecureStorage),
activeSessionsRepositoryProvider.overrideWithValue(mockActiveSessionsRepository),
],
);
addTearDown(container.dispose);
return container;
}

test(
'Fetch all active sessions',
() async {
final ProviderContainer container = makeProviderContainer();
final Listener listener = Listener();

container.listen(
activeSessionsNotifer,
listener,
fireImmediately: true,
);

verify(() => listener(const ActiveSessionsInitialState(), const ActiveSessionsLoadingState()));
},
);
}

```

The `verify` call is giving me the below error and I believe it is because the use of `Listener` class.
```
Used on a non-mockito object
package:test_api fail
_makeVerify.
main.
```