Examine source code of Twitter Search

{
  "name": "Twitter Search",
  "description": "English-language Twitter search plugin based on the one in Firefox 77.",
  "manifest_version": 2,
  "version": "1.0",
  "applications": {
    "gecko": {
      "id": "twitter-search@jeffersonscher.com",
      "strict_min_version": "64.0"
    }
  },
  "developer": {
    "name": "Jefferson \"jscher2000\" Scher",
    "url": "https://github.com/jscher2000/"
  },
  "icons": {
    "64": "twitter-search-64.png"
  },
  "web_accessible_resources": [
    "twitter-search-64.png"
  ],
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Twitter",
      "search_url": "https://twitter.com/search?q={searchTerms}"
    }
  }
}