The `OnSelectionChanged` method is a virtual method in the `NavMeshLinkTool` class, which is part of the editor tools for managing navigation mesh links in a scene. This method is called whenever the selection of objects in the editor changes. It allows developers to implement custom behavior that should occur when the selection state is modified, such as updating the UI or recalculating certain properties related to the selected objects.

To use the `OnSelectionChanged` method, you should create a subclass of `NavMeshLinkTool` and override this method to provide specific functionality that should be executed when the selection changes. This could involve updating visual indicators, recalculating navigation paths, or any other logic that depends on the current selection in the editor. ### Example ```csharp public class CustomNavMeshLinkTool : NavMeshLinkTool { public override void OnSelectionChanged() { // Custom logic to handle selection changes UpdateLinkVisuals(); } private void UpdateLinkVisuals() { // Implementation for updating visuals } } ``` In this example, `CustomNavMeshLinkTool` overrides `OnSelectionChanged` to call a method `UpdateLinkVisuals`, which would contain the logic for updating the visual representation of the navigation links based on the current selection.

public class CustomNavMeshLinkTool : NavMeshLinkTool
{
    public override void OnSelectionChanged()
    {
        // Custom logic to handle selection changes
        UpdateLinkVisuals();
    }

    private void UpdateLinkVisuals()
    {
        // Implementation for updating visuals
    }
}