public IList <MatchingPair> GetMatchingPairs(ICollection <LostAndFoundIndexedItem> items)
{
var findings = items.Where(item => item.ItemType == LostAndFoundIndexedItem.Type.Finding).ToArray();
var randomizer = new Random();
Func <LostAndFoundIndexedItem, LostAndFoundIndexedItem> randomNonMatch =
item => findings[randomizer.Next(0, findings.Length - 1)];
var unmatched = items.Where(match => match.ItemType == LostAndFoundIndexedItem.Type.Loss &&
match.MatchedRecordID == null &&
(DateTime.Now - match.DateOfIncident).Days > _daysWithoutMatch);
return(unmatched.Select(item => _mapper.MapNonMatch(item, randomNonMatch(item))).ToList());
}