/// <summary>
/// Gets conditions for <see cref="ReadOnlyObservableCollection{TObject}"/>.
/// </summary>
/// <typeparam name="TObject">The type of the object.</typeparam>
/// <param name="source">The source <see cref="ReadOnlyObservableCollection{TObject}"/>.</param>
/// <returns><see cref="IEnumerableCondition{TSource,TObject}"/></returns>
public static IEnumerableCondition <ReadOnlyObservableCollection <TObject>, TObject> Is <TObject>(this ReadOnlyObservableCollection <TObject> source)
=> source.IsEnumerable <ReadOnlyObservableCollection <TObject>, TObject>();
