using TodoTicketApp.Models; namespace TodoTicketApp.Services; public interface ITicketService { void AddTicket(Ticket ticket); IEnumerable GetPendingTickets(); Ticket? GetNextTicket(); void CompleteTicket(Guid id); void AddComment(Guid ticketId, TicketComment comment); Ticket? GetTicketById(Guid id); void UpdateTicket(Ticket ticket); }