Examine source code of Tree Style Tab

{
  "manifest_version": 2,
  "name": "Tree Style Tab",
  "version": "1.0",
  "description": "Display browser tabs in a tree style sidebar.",
  "permissions": [
    "tabs",
    "storage"
  ],
  "sidebar_action": {
    "default_title": "Tree Style Tab",
    "default_panel": "sidebar.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tree-style-tab-qx4v9@extension",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}