# GoogleNavigation Framework Reference

# GMSCALayer

    @interface GMSCALayer : CALayer

`GMSCALayer` is a superclass used by layers in the Google Maps SDK for iOS, such as `https://developers.google.com/maps/documentation/navigation/ios-sdk/reference/objc/Classes/GMSMapLayer.html`
and `https://developers.google.com/maps/documentation/navigation/ios-sdk/reference/objc/Classes/GMSPanoramaLayer.html`.

This is an implementation detail and it should not be instantiated directly.