# `GSLayer.userDataFast`

*Instance Property*

## Declaration

```swift
var userDataFast: NSMutableDictionary? { get set }
```

```objc
@property (nonatomic, strong) NSMutableDictionary<NSString *,id> * userDataFast;
```

```python
userDataFast() -> dict[str, object]
setUserDataFast_(userDataFast: dict[str, object])
```