)]}'
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  "author": {
    "name": "xster",
    "email": "xiao@xster.net",
    "time": "Thu Oct 19 19:19:49 2017 -0700"
  },
  "committer": {
    "name": "GitHub",
    "email": "noreply@github.com",
    "time": "Thu Oct 19 19:19:49 2017 -0700"
  },
  "message": "Let CupertinoNavBar automatically have a back or close button (#12575)\n\n* create auto back button behaviour\r\n\r\n* cosmetic fidelity\r\n\r\n* tests\r\n\r\n* review\r\n\r\n* document new icon\r\n",
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