public class CachedData<TCache> : ICachedData<TCache>

    public IDictionary<object, IList<TCache>> ItemCollections { get; set; }

    public IDictionary<object, TCache> Items { get; set; }

    public IEnumerable<TCache> List { get; set; }

    public bool UsedMultipleEntriesPerKey { get; set; }