/// <summary>
 /// Does intersection-equality testing on two collections, ignoring complex item referencing
 /// </summary>
 /// <param name="continuation">Continuation to operate on</param>
 /// <param name="expected">Collection to match</param>
 /// <param name="customEqualityComparers">Custom implementations of IEqualityComparer&lt;TProperty&gt;
 /// to use when comparing properties of type TProperty</param>
 /// <typeparam name="T">Collection item type</typeparam>
 public static void Equal <T>(
     this ICollectionIntersection <T> continuation,
     IEnumerable <T> expected,
     params object[] customEqualityComparers
     )
 {
     continuation.Equal(expected, NULL_STRING, customEqualityComparers);
 }
 /// <summary>
 /// Does intersection-equality testing on two collections, ignoring complex item referencing
 /// </summary>
 /// <param name="continuation">Continuation to operate on</param>
 /// <param name="expected">Collection to match</param>
 /// <param name="customMessage">Custom message to add when failing</param>
 /// <param name="customEqualityComparers">Custom implementations of IEqualityComparer&lt;TProperty&gt;
 /// to use when comparing properties of type TProperty</param>
 /// <typeparam name="T">Collection item type</typeparam>
 public static void Equal <T>(
     this ICollectionIntersection <T> continuation,
     IEnumerable <T> expected,
     string customMessage,
     params object[] customEqualityComparers
     )
 {
     continuation.Equal(expected, () => customMessage, customEqualityComparers);
 }