void OnCollisionEnter2D(Collision2D other) { // Get contacts array ContactPoint2D[] contacts = other.contacts; // Loop through contacts and print information foreach (ContactPoint2D contact in contacts) { Debug.Log("Contact point: " + contact.point); Debug.Log("Contact normal: " + contact.normal); Debug.Log("Contact impulse: " + contact.normalImpulse); } }In this example, the OnCollisionEnter2D() method is called whenever two colliders collide. The contacts array is then retrieved using the GetContacts() method and looped through to print information about each contact point. The package library for this method is the UnityEngine.Physics2D package, which is included in the Unity game engine.