Examine source code of Google Meet Auto Admit

{
  "manifest_version": 2,
  "name": "Google Meet Auto Admit",
  "version": "1.0",
  "description": "Automatically admits users in Google Meet.",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://meet.google.com/*"
      ],
      "js": [
        "meet-auto-admit.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{61889381-48cc-4984-8d77-c9bf5b6ef9a3}"
    }
  }
}