Examine source code of mind map icon

{
  "manifest_version": 2,
  "name": "mind map icon",
  "version": "1.0",
  "description": "The mind map icon is often used as a network or branching structure, often used to represent a mind map or network of connections.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Click me!"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3771d39e-9ba0-4c2c-bab7-ab14db6d4316}"
    }
  }
}