Examine source code of Auto Minimize

{
  "manifest_version": 2,
  "name": "Auto Minimize",
  "description": "Set a limit for how many unminimized windows are allowed and minimize the rest",
  "version": "1.0.1",
  "permissions": [
    "sessions",
    "storage"
  ],
  "background": {
    "page": "background/background.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "autominimize@lionelw"
    }
  },
  "icons": {
    "48": "auto-minimize.svg",
    "96": "auto-minimize.svg"
  }
}