public void Empty()
{
BackingStore.Clear();
}
/// <summary>
/// For any <see cref="IDisposable"/> items in the store, call <see cref="IDisposable.Dispose"/> and clear out the reference to the item from the <see cref="BackingStore"/>.
/// Call from <see cref="SitkaGlobalBase.ApplicationEndRequest" /> to free resources, particularly EntityFramework contexts otherwise may use up sql connection pool.
/// </summary>
public static void DisposeItemsAndClearStore()
{
BackingStore.Values.OfType <IDisposable>().ToList().ForEach(item => item.Dispose());
BackingStore.Clear();
}