)]}'
{
  "commit": "049f80f3b9289e322cb1d0cfe63c6aa6bd40338f",
  "tree": "bd89f97f1d5bcd62a7b882b47b908fc99953ca30",
  "parents": [
    "1773b95737a78bbe12f4011511d90da9d605808f"
  ],
  "author": {
    "name": "qining",
    "email": "qining@google.com",
    "time": "Thu Sep 08 18:00:12 2016 -0400"
  },
  "committer": {
    "name": "qining",
    "email": "qining@google.com",
    "time": "Thu Sep 08 19:32:20 2016 -0400"
  },
  "message": "Add IsSigned() to opt::Analysis::Integer.\n",
  "tree_diff": [
    {
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