public static ValidateTarget <TValue?> IsNull <TValue>([ValidatedNotNull] this ValidateTarget <TValue?> target, Func <string> getErrorMessage = null)
where TValue : struct
{
if (target.Value.HasValue)
{
ExceptionFactory.ThrowException(target.Traits.GenericFailureExceptionType, getErrorMessage != null ? getErrorMessage.Invoke() : ErrorMessageFactory.ShouldBeNull(target));
}
return(target);
}
