public SeatNode(Seat seat) { SeatObj = seat; }
public SeatNode(SeatNode prev, SeatNode nex, Seat obj) { Previous = prev; Next = nex; SeatObj = obj; }
public SeatNode(Seat seat) { SeatObj = seat; }
public SeatNode(SeatNode prev, SeatNode nex, Seat obj) { Previous = prev; Next = nex; SeatObj = obj; }