From f6afb611b0919204e1280c09a7d44c07b7874fba Mon Sep 17 00:00:00 2001
From: Yang Wang <tiandiwoxin@icloud.com>
Date: Wed, 7 Jun 2017 18:08:12 +0800
Subject: [PATCH] refactor InitializationMethod (#960)

* refactor init

* fix test

* address some comments

* fix tests

* add trait

* fix tests