public override void OnInspectorGUI()
    {
        serializedObject.Update();

        PrefabLoader loader = target as PrefabLoader;

        PrefabType prefabType = PrefabUtility.GetPrefabType(loader.gameObject);

        if (prefabType == PrefabType.PrefabInstance)
        {
            GUILayout.Label("Prefabの管理 (更新/復元はこのボタンで必ずすること)");
            using (var scopeH = new GUILayout.HorizontalScope()) {
                if (GUILayout.Button("Select", EditorStyles.miniButtonLeft))
                {
                    loader.EditorExecSelect();
                }
                if (GUILayout.Button("Revert", EditorStyles.miniButtonMid))
                {
                    loader.EditorExecRevert();
                }
                if (GUILayout.Button("Apply", EditorStyles.miniButtonRight))
                {
                    loader.EditorExecApply();
                    loader.EditorExecInstantiate();
                }
            }
        }
        if (prefabType != PrefabType.Prefab)
        {
            using (var scopeH = new GUILayout.HorizontalScope()) {
                if (GUILayout.Button("Instantiate", EditorStyles.miniButtonLeft))
                {
                    loader.EditorExecInstantiate();
                }
                if (GUILayout.Button("Update TransformData", EditorStyles.miniButtonMid))
                {
                    loader.EditorExecUpdateTransformData();
                }
                if (GUILayout.Button("Remove", EditorStyles.miniButtonRight))
                {
                    loader.EditorExecRemove();
                }
            }
        }

        if (loader.IsNeedUpdateTransformData() && !Application.isPlaying)
        {
            EditorGUILayout.HelpBox(
                "子プレハブのTransform情報がシリアライズされていません\n" +
                "Update TransformDataで更新してください."
                , MessageType.Info);
        }

        GUILayout.Space(5f);

        EditorGUILayout.PropertyField(loadTiming, true);

        reorderableList.DoLayoutList();

        serializedObject.ApplyModifiedProperties();
        //EditorGUILayout.PropertyField (info, true);
    }