Examine source code of Todo Sidebar

{
  "manifest_version": 2,
  "name": "To-do Sidebar",
  "description": "Displays Microsoft To-do Web App in the sidebar.",
  "homepage_url": "https://github.com/isaacvandor/firefox-TodoApp-sidebar",
  "version": "1.0",
  "applications": {
    "gecko": {
      "strict_min_version": "60.0"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "sidebar_action": {
    "default_icon": "icons/todo-48.png",
    "default_title": "Microsoft To Do",
    "default_panel": "sidebar/panel.html"
  },
  "icons": {
    "48": "icons/todo-48.png",
    "96": "icons/todo-96.png"
  },
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Shift+Alt+Z"
      },
      "description": "Toggle the sidebar window"
    }
  }
}