Trace a ray between two game bject ( Nav Mesh)?

Hi everyone,

I appreciate the new functionnability of UNity 3.5 for navmesh and pathfinding

I know how to use NavMeshAgent to attract a gameobject thanks to navmesh. However, I want to make a visible trace between these gameobject like in a GPS.

I see a raycast function for NavMeshAgent components, but I don't see it in my scene...

 public class NavTestScript : MonoBehaviour {
     
     public Transform target;
     private NavMeshHit hit;
 
     // Update is called once per frame
     void Update () {
     
         GetComponent<NavMeshAgent>().destination = target.position;
         GetComponent<NavMeshAgent>().Raycast(target.position, out hit);
     }
 }

Can you help me?