Editor/tools/firefox-addon-sdk-1.16/test/addons/simple-prefs/package.json

{
  "id": "test-simple-prefs",
    "preferences": [{
        "name": "somePreference",
        "title": "some-title",
        "description": "Some short description for the preference",
        "type": "string",
        "value": "TEST"
    },
    {
        "description": "How many of them we have.",
        "name": "myInteger",
        "type": "integer",
        "value": 8,
        "title": "my-int"
    }, {
        "name": "myHiddenInt",
        "type": "integer",
        "hidden": true,
        "value": 5,
        "title": "hidden-int"
    }]
}