example.cs

        public bool InstiantiationCheck(GameObject GO, out GameObject instGo)
        {
            instGo = null;

            foreach (GameObject go in ObjectPoolList)
            {
                if ( !ReferenceEquals(GO.GetComponent<PooledObject>(), null) && go.GetComponent<PooledObject>().nbrRef == GO.GetComponent<PooledObject>().nbrRef || GO.name.Equals(go.name) )
                {
                    instGo = go;
                    return true;     
                }
            }
            if(!GO.GetComponent<PooledObject>())
                GO.AddComponent<PooledObject>();

            GameObject temp = Instantiate(GO, ObjectPool.transform);
            PooledObject po = temp.GetComponent<PooledObject>();
            po.name = po.name.Replace("(Clone)", "");
            po.nbrRef = po.gameObject.GetHashCode();
            GO.GetComponent<PooledObject>().nbrRef = po.nbrRef;
            po.mr = (GetComponent<MeshRenderer>()) ? GetComponent<MeshRenderer>() : GetComponentInChildren<MeshRenderer>();
            ObjectPoolList.Add(po.gameObject);
            instGo = po.gameObject;
            return false;
            
        }