Examine source code of Twitter Sidebar

{
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "manifest_version": 2,
  "name": "Twitter Sidebar",
  "description": "Displays Twitter in the sidebar.",
  "version": "1.5.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{01cf6ad3-4729-433b-a430-2748b01f508a}",
      "strict_min_version": "60.0"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "sidebar_action": {
    "default_icon": {
      "48": "icons/icon1_48.png",
      "96": "icons/icon1_96.png"
    },
    "default_title": "Twitter",
    "browser_style": false,
    "default_panel": "panel.html"
  },
  "icons": {
    "48": "icons/icon2_48.png",
    "96": "icons/icon2_96.png"
  },
  "permissions": [
    "storage"
  ],
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Shift+Alt+U"
      },
      "description": "Toggle the Twitter sidebar"
    }
  }
}