Examine source code of noMyTT

{
  "manifest_version": 3,
  "name": "noMyTT",
  "description": "Eliminate redirects to www.mytischtennis.de",
  "version": "2.1",
  "icons": {
    "48": "nomytts.png",
    "128": "nomytt.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.click-tt.de/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{297b4e7c-ad60-4247-82cd-116be0340881}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}