Examine source code of Qwant search engine adder

{
  "manifest_version": 2,
  "name": "Qwant search engine adder",
  "description": "It adds the qwant search engine to firefox without any popup.",
  "version": "1.1resigned1",
  "chrome_settings_overrides": {
    "homepage": "https://www.qwant.com/",
    "search_provider": {
      "name": "Qwant",
      "keyword": "q",
      "search_url": "https://www.qwant.com/?q={searchTerms}",
      "favicon_url": "https://www.qwant.com/favicon.ico",
      "suggest_url": "https://api.qwant.com/api/suggest/?q={searchTerms}&client=opensearch&lang=__MSG_locale__",
      "is_default": true
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cdabd850-3401-4eb2-a1d8-116a92e8a6f3}"
    }
  }
}