private static Zendesk.Model.User?FindRequester(Zendesk.Model.TicketResponse response)
 => response.Users?.FirstOrDefault(x => x.Id == response.Ticket.RequesterId);
 private static Zendesk.Model.Organization?FindOrganisation(Zendesk.Model.TicketResponse response)
 => response.Organizations?.FirstOrDefault(x => x.Id == response.Ticket.OrganizationId);