Examine source code of Comeback Larry

{
  "manifest_version": 2,
  "name": "Come Back Larry",
  "version": "1.0",
  "description": "Bring back Larry the bird on Twitter / X",
  "icons": {
    "16": "King.png",
    "48": "King.png",
    "128": "King.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{19d552ff-ec19-4aaf-9520-1eee35b73dd8}"
    }
  }
}