public static Option <TSource> Single <TSource>(this ImmutableList <TSource> source) #pragma warning disable HLQ005 // Avoid Single() and SingleOrDefault() => ReadOnlyListExtensions.Single <ValueWrapper <TSource>, TSource>(new ValueWrapper <TSource>(source));
public static Option <TSource> Single <TSource>(this ImmutableArray <TSource> source) => ReadOnlyListExtensions.Single <ImmutableArray <TSource>, TSource>(source);