Examine source code of pinHomePage

{
  "manifest_version": 2,
  "name": "pin-home-page",
  "version": "1.6",
  "description": "Pin home page tab(s)",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "pin.js"
    ]
  },
  "permissions": [
    "tabs",
    "browserSettings"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pin-home-page@omacronides.com",
      "strict_min_version": "115.0"
    }
  }
}