# `GSMainTabBarViewController initWithController:contentView:`

*Initializer*

## Declaration

```swift
init(controller: Any, contentView: NSView)
```

```objc
- (instancetype) initWithController:(id) controller contentView:(NSView *) contentView;
```

```python
initWithController_contentView_(controller: object, contentView: NSView) -> GSMainTabBarViewController
```