# `GSFontViewController.mainSplitViewController`

*Instance Property*

## Declaration

```swift
var mainSplitViewController: NSSplitViewController! { get set }
```

```objc
@property (nonatomic, strong) NSSplitViewController * mainSplitViewController;
```

```python
mainSplitViewController() -> NSSplitViewController
setMainSplitViewController_(mainSplitViewController: NSSplitViewController)
```