RSRP-274851: Non-redunant call to Cast LINQ method shown as redundant

Whenever you extend a non-generic collection and want to add a generic enumerator, you'll implement code such as this:

public class ElementCollection: ConfigurationElementCollection, IEnumerable<ElementType> {
	public new IEnumerator<ElementType> GetEnumerator() {
		return this.Cast<ElementType>().GetEnumerator();
	}
}

One such example is when inheriting from ConfigurationElementCollection, which are collections with a known element type, but not implementing the generic IEnumerable interface.

R# suggests that "Cast<ElementType>()" is redundant, and the proposed fix is to remove the redundant code. Doing this however changes the code so that it will cause a stack overflow at runtime due to the unwanted recursion.