Examine source code of LinkedIn Feed Blocker

{
  "manifest_version": 3,
  "name": "LinkedIn Feed Blocker",
  "version": "1.0",
  "description": "Hides the LinkedIn main feed",
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/*"
      ],
      "css": [
        "hide.css"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "linkedin-feed-blocker@dgaliano.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}