Examine source code of PAC Proxy Manager

{
  "name": "PAC Proxy Manager",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Sets PAC script for extension evaluation.",
  "permissions": [
    "proxy",
    "storage",
    "<all_urls>",
    "tabs",
    "activeTab",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "incognito": "spanning",
  "browser_specific_settings": {
    "gecko": {
      "id": "pacproxymanager@sqrx.com",
      "strict_min_version": "91.1.0"
    }
  }
}