/// <summary>
/// Compares two entities and detects, if they are the same or not.
/// </summary>
/// <param name="a">A source entity (an entity in this collection).</param>
/// <param name="b">A target entity (an entity in the other collection).</param>
/// <returns>True if both entities are the same.</returns>
public bool NeedsUpdate(BookAuthor a, BookAuthor b)
{
return(a.NeedsUpdate(b));
}
