UnityEngine.Terrain.GetPosition C# (CSharp) Method

        public Vector3 GetPosition()
        {
            Vector3 vector;
            INTERNAL_CALL_GetPosition(this, out vector);
            return vector;
        }

    void OnTriggerEnter(Collider col)
    {
        if(col.gameObject.tag == "Terrain"){

            prevTerrain = Instantiate(TerrainPieces[(int)Random.Range(0, TerrainPieces.Length)], new Vector3(0, 0, prevTerrain.GetPosition().z + prevTerrain.terrainData.size.z), Quaternion.identity)as Terrain;
            GameObject temp = Instantiate(TerrainObjects, new Vector3(0, 0, prevTerrain.GetPosition().z), Quaternion.identity)as GameObject;

        }
    }