Examine source code of 2dehands Plugin

{
  "manifest_version": 3,
  "name": "2dehands Plugin",
  "description": "Hide sponsored/advertised listings and block by seller or keywords on 2dehands.be and 2ememain.be.",
  "version": "0.2.4",
  "license": "MIT",
  "action": {
    "default_title": "2dehands Plugin"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "2dehands-plugin-8fcb3a97-2e24-4a6b-903d-bb934fcfce10@addons.mozilla.org",
      "strict_min_version": "109.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.2dehands.be/*",
        "https://www.2ememain.be/*"
      ],
      "css": [
        "content/content.css"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "host_permissions": [
    "https://www.2dehands.be/*",
    "https://www.2ememain.be/*"
  ],
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true,
    "browser_style": true
  }
}