This example shows how to get a reference to the native Toggle component that is attached to the same GameObject as the UIToggle component. You don’t really need this reference, but should you have a particular use-case where you need it this is the way to get it.
public class ExampleClass : MonoBehaviour
public UIToggle MyToggle;
private void Start()
Toggle toggle = MyToggle.Toggle; //get a reference to the native Toggle component attached to the same GameObject as the UIToggle component