/// <summary>
/// Asserts that this instance is empty.
/// </summary>
/// <typeparam name="T">The type of the elements in the array.</typeparam>
/// <param name="assert">This <see cref="Asserter{T}"/>.</param>
/// <returns>This <paramref name="assert"/>.</returns>
public static Asserter <T> Empty <T>(this Asserter <T> assert) where T : notnull, ICount => assert.Count(0);