/// <summary>
 /// Breaks a list of items into chunks of a specific size and yields T items.
 /// </summary>
 /// <param name="source">Source list.</param>
 /// <param name="chunkSize">Chunk size.</param>
 /// <returns>Items of type T.</returns>
 public static IEnumerable <T> ChunkSelect <T>(
     this IQueryable <T> source,
     int chunkSize = DefaultChunkSize)
 {
     return(CollectionUtils.ChunkSelect(source, chunkSize));
 }