Examine source code of Google Tasks Sidebar

{
  "manifest_version": 2,
  "name": "Google Tasks Sidebar",
  "description": "Displays Google Tasks in the sidebar.",
  "version": "1.0.0.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox-google-tasks-sidebar@example.com",
      "strict_min_version": "60.0"
    }
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "sidebar_action": {
    "default_icon": {
      "48": "icons/GoogleTasks.svg",
      "96": "icons/GoogleTasks.svg"
    },
    "default_title": "Google Tasks",
    "default_panel": "sidebar/panel.html"
  },
  "icons": {
    "48": "icons/GoogleTasks.svg",
    "96": "icons/GoogleTasks.svg"
  },
  "permissions": [
    "storage"
  ],
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Shift+Alt+G"
      },
      "description": "Toggle the Google Tasks sidebar"
    }
  }
}