public void Test3()
        {
            // Arrange
            var ticketPL = new TicketPL()
            {
                FlightForeignKey = 3, Price = 50, Id = 1
            };

            // Act
            var result = serviceTicket.MapTicket(ticketPL, mapper);

            // Assert
            Assert.Equal(ticketPL.Id, result.Id);
            Assert.Equal(ticketPL.Price, result.Price);
            Assert.Equal(ticketPL.FlightForeignKey, result.FlightForeignKey);
        }