Load Asset Bundle in Unity

using UnityEngine;
using System.Collections;
using System.IO;

public class LoadFromFileExample : MonoBehaviour {

    // Use this for initialization
    void Start () {
        var myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath , "assetbundle.unity3d"));
        if (myLoadedAssetBundle == null)
        {
            Debug.Log("Failed to load AssetBundle!");
            return;
        }
        var prefab = myLoadedAssetBundle.LoadAsset< GameObject > ("prefab name");
        Instantiate(prefab);
    }

    // Update is called once per frame
    void Update () {

    }
}