Examine source code of Sidebery

{
  "manifest_version": 2,
  "name": "Sidebery",
  "version": "1.0.0",
  "description": "A sidebar-based tab manager for Firefox.",
  "permissions": [
    "tabs"
  ],
  "sidebar_action": {
    "default_title": "Sidebery",
    "default_panel": "sidebar.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "aponcch.a.km.a.5.40@gmail.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}