{
  "docs": {
    "Basics": [
      "README",
      "intro/installation",
      "intro/overview",
      "intro/concepts"
    ],
    "MobX and React": [
      "react/react-integration",
      "react/react-performance",
      "react/react-class-components"
    ],
    "Making things observable": [
      "refguide/make-observable",
      "refguide/observable",
      "refguide/object",
      "refguide/array",
      "refguide/map"
    ],
    "Updating observables": [
      "refguide/action",
      "best/actions",
      "refguide/object-api"
    ],
    "Reacting to observables": [
      "refguide/computed-decorator",
      "refguide/autorun",
      "refguide/when",
      "refguide/reaction",
      "best/react"
    ],
    "Utilities": [
      "refguide/api",
      "refguide/boxed",
      "refguide/modifiers",
      "refguide/tojson",
      "refguide/inject",
      "refguide/extend-observable",
      "refguide/extending",
      "refguide/observe",
      "refguide/create-transformer",
      "refguide/expr",
      "refguide/mobx-utils"
    ],
    "Tips & Tricks": [
      "faq/faq",
      "best/pitfalls",
      "best/limitations-without-proxies",
      "best/decorators",
      "best/trace",
      "best/store",
      "refguide/spy"
    ]
  }
}

{
  "docs": {
    "Basics": [
      "README",
      "intro/installation",
      "intro/overview",
      "intro/concepts"
    ],
    "MobX and React": [
      "react/react-integration",
      "react/react-performance",
      "react/react-class-components"
    ],
    "Making things observable": [
      "refguide/make-observable",
      "refguide/observable",
      "refguide/object",
      "refguide/array",
      "refguide/map"
    ],
    "Updating observables": [
      "refguide/action",
      "best/actions"
    ],
    "Reacting to observables": [
      "refguide/computed-decorator",
      "refguide/autorun",
      "refguide/when",
      "refguide/reaction",
      "best/react"
    ],
    "Utilities": [
      "refguide/api",
      "refguide/boxed",
      "refguide/modifiers",
      "refguide/tojson",
      "refguide/inject",
      "refguide/extend-observable",
      "refguide/extending",
      "refguide/observe",
      "refguide/create-transformer",
      "refguide/expr",
      "refguide/object-api",
      "refguide/mobx-utils"
    ],
    "Tips & Tricks": [
      "faq/faq",
      "best/pitfalls",
      "best/limitations-without-proxies",
      "best/decorators",
      "best/trace",
      "best/store",
      "refguide/spy"
    ]
  }
}

Move the object API to utilities.
Move the object API to utilities.
