Examine source code of LinkedIn Anti Refresh

{
  "manifest_version": 3,
  "name": "LinkedIn Anti Refresh",
  "version": "1.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "root@bundesnachrichtendienst.org",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "description": "Verhindert, dass LinkedIn den Feed beim Tab-Wechsel neu lädt.",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "js": [
        "script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "icons/alr16.png",
    "32": "icons/alr32.png",
    "96": "icons/alr96.png"
  }
}