Examine source code of PHP Manual

{
  "manifest_version": 2,
  "name": "PHP Manual",
  "version": "1.0",
  "description": "Easily search the PHP manual using the keyword `php` without using a search engine first.",
  "icons": {
    "48": "icon-48.png"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "PHP",
      "search_url": "https://www.php.net/manual-lookup.php?pattern={searchTerms}",
      "keyword": "php",
      "favicon_url": "https://www.php.net/favicon.ico"
    }
  }
}