Examine source code of Swagger Token Manager

{
  "name": "Swagger Token Manager",
  "version": "1.2.1",
  "description": "An extension to manage swagger auth tokens. That applies bearer token with a single click.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png",
    "512": "icons/icon-16.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "manifest_version": 2,
  "developer": {
    "name": "Minhazul Hayat Khan",
    "url": "https://github.com/minhaz1217/swagger-profile"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png",
      "256": "icons/icon-256.png",
      "512": "icons/icon-16.png"
    },
    "default_title": "Swagger Profile Manager",
    "default_popup": "popup/index.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c38fbd25-a5cf-419f-a13f-a2ca643ae3d7}"
    }
  }
}