/// <summary>
/// Asserts that the current object has not been initialized yet.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="that"></param>
/// <param name="message"></param>
public static void BeNull <T>(this EventualAssertions <T> that, string message = null) where T : class
{
that.Be(null, message);
}
/// <summary>
/// Asserts that the value is false.
/// </summary>
/// <param name="that"></param>
/// <param name="message"></param>
public static void BeFalse(this EventualAssertions <bool> that, string message = null)
{
that.Be(expectedValue: false, message: message);
}