// import "package:anyway/structs/landmark.dart";

// class Linked<Landmark> {
//   Landmark? head;
  
//   Linked();

//   // class methods
//   bool get isEmpty => head == null;

//   // Add a new node to the end of the list
//   void add(Landmark value) {
//     if (isEmpty) {
//       // If the list is empty, set the new node as the head
//       head = value;
//     } else {
//       Landmark? current = head;
//       while (current!.next != null) {
//         // Traverse the list to find the last node
//         current = current.next;
//       }
//       current.next = value; // Set the new node as the next node of the last node
//     }
//   }

//   // Remove the first node with the given value
//   void remove(Landmark value) {
//     if (isEmpty) return;

//     // If the value is in the head node, update the head to the next node
//     if (head! == value) {
//       head = head.next;
//       return;
//     }

//     var current = head;
//     while (current!.next != null) {
//       if (current.next! == value) {
//         // If the value is found in the next node, skip the next node
//         current.next = current.next.next;
//         return;
//       }
//       current = current.next;
//     }
//   }
// }