public static void IfCollectionContainsNull <T>(
[CanBeNull, AssertionCondition(AssertionConditionType.IS_NOT_NULL)]
IEnumerable <T> collection,
[NotNull][System.Diagnostics.CodeAnalysis.NotNull] string collectionName
)
where T : class
{
Fail.RequiresCollectionName(collectionName);
if (collection == null)
{
throw Fail.Because(Violation.WhenCollectionIsNull(collectionName));
}
if (collection.Contains(null))
{
throw Fail.Because(Violation.WhenCollectionContainsNull(collectionName));
}
}