/// <summary>
 /// Determines whether the current set overlaps with the specified collection.
 /// </summary>
 /// <param name="other">The collection to compare to the current set.</param>
 /// <returns>true if the current set and other share at least one common element; otherwise, false.</returns>
 public bool Overlaps(IEnumerable <T> other)
 {
     return(ImmutableHashSet <T> .Overlaps(other, this.Origin));
 }