Examine source code of DuckDuckGo (POST) Search

{
  "manifest_version": 2,
  "name": "DuckDuckGo (POST) Search",
  "description": "Add DuckDuckGo with POST requests as a search engine.",
  "version": "1.0.0",
  "icons": {
    "256": "icon.png"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "keyword": [
        "@duckduckgo",
        "@ddg"
      ],
      "name": "DuckDuckGo (POST)",
      "search_url": "https://duckduckgo.com/",
      "search_url_post_params": "q={searchTerms}",
      "favicon_url": "https://duckduckgo.com/favicon.ico",
      "encoding": "UTF-8"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f411204-a249-4366-af0e-feae89f16b45}"
    }
  }
}