# `GSProgressWindowController stopTask:`

*Instance Method*

Stops tracking a task.

## Declaration

```swift
func stopTask(_ taskToken: Any)
```

```objc
- (void) stopTask:(id) taskToken;
```

```python
stopTask_(taskToken: object)
```

## Parameters

- `taskToken` — The opaque object returned by `-addTaskWithTitle:`.

## Discussion

Calling this method repeatedly with the same `taskToken` object will crash.