/// <summary>
/// Helper for testing empty array
/// </summary>
/// <typeparam name="T">type of item in array</typeparam>
private static void TestEmptyArray <T>()
{
var instance1 = Empty.GetArray <T>();
Assert.IsNotNull(instance1);
var instance2 = Empty.GetArray <T>();
Assert.IsNotNull(instance2);
Assert.IsTrue(object.ReferenceEquals(instance1, instance2));
}