PoolGetPool.cs

    public static Pool GetPool(IPoolable prefab)
    {
        if (pools.ContainsKey(prefab))
        {
            if (pools[prefab] != null)
                return pools[prefab];
            else
                pools.Remove(prefab);
        }

        var pool = new GameObject("Pool-" + (prefab as Component).name).AddComponent<Pool>();
        pool.Initialize(prefab);
        pools.Add(prefab, pool);
        return pool;
    }