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ref: 75f242d49ab0f5da5f118a5aebc403f1eef74a9a parent: 05d13b4a996d7987c7028baf47dc23b9c7d884b7 author: huili2 <huili2@cisco.com> date: Fri Dec 2 09:49:27 EST 2016
make BaseOption set align with extOption