Examine source code of Sidebar Extension

{
  "manifest_version": 2,
  "name": "Sidebar Extension",
  "version": "1.0",
  "description": "Adds a sidebar to the browser",
  "icons": {
    "48": "logo.png"
  },
  "permissions": [],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "sidebar_action": {
    "default_title": "Sidebar Extension",
    "default_panel": "sidebar.html",
    "default_icon": {
      "16": "logo.png",
      "32": "logo.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{77afc8df-f271-4b05-9373-a6948be44643}"
    }
  }
}