Examine source code of Belgium eID

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "homepage_url": "https://eid.belgium.be/",
  "version": "1.0.32",
  "permissions": [
    "pkcs11",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "belgiumeid@eid.belgium.be",
      "strict_min_version": "57.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.belgium.be/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "default_locale": "en"
}