Examine source code of Anna's Task Tracker

{
  "manifest_version": 2,
  "name": "Anna's Task Tracker",
  "version": "1.0",
  "description": "A little progress tracker for your tasks.",
  "icons": {
    "48": "icons/48.png"
  },
  "sidebar_action": {
    "browser_style": true,
    "default_title": "Anna's Task Tracker",
    "default_panel": "att.html",
    "default_icon": {
      "48": "icons/48.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@annas-task-tracker",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Alt+A"
      }
    }
  }
}