am 2eaa846e: am 54d21dad: docs: updates to the backup dev guide add sample code for performing restore and fix typos bug: 3180881,3125550,3125563

* commit '2eaa846ed34bded6889df5bce96cc17abc296cee':
  docs: updates to the backup dev guide add sample code for performing restore and fix typos bug: 3180881,3125550,3125563