FSScreen sets screen name for navigation events.

iOS only

Set a custom screen name for navigation events, which are fired when a screen loads. By default, the name of the UIViewController class for the screen is used. This name can be customized by conforming UIViewController (or its subclasses) to the FSScreen protocol and implementing the fullstoryScreenName property.

The fullstoryScreenName property is guaranteed to only be accessed on the main thread.

This is currently only used for UIViewController instances.