public class Matched_Refunded_SF_Tickets_Cnt
{
    public List<MatchingTicketsLibrary.MatchedTicketWrapper> unmatchedTickets { get { return Filter.unmatchedTickets; } }

    public String selectedTicket { get; set; }

    public Filter filter { get{ if (filter==null) filter = new Filter(); return filter; } set; }

    @TestVisible class Filter
    {
        public List<MatchingTicketsLibrary.MatchedTicketWrapper> unmatchedTickets { get; set; }
    }