# `GSFontViewController.widthMetricsKey`

*Instance Property*

## Declaration

```swift
var widthMetricsKey: String! { get set }
```

```objc
@property (nonatomic, strong) NSString * widthMetricsKey;
```

```python
widthMetricsKey() -> str
setWidthMetricsKey_(widthMetricsKey: str)
```