Examine source code of Tabs Aside

{
  "manifest_version": 2,
  "name": "Tabs Aside",
  "version": "3.6.0",
  "description": "__MSG_extension_description__",
  "author": "Tim Weißenfels",
  "default_locale": "en",
  "icons": {
    "48": "img/browserAction/dark.svg"
  },
  "applications": {
    "gecko": {
      "id": "{644e8eb0-c710-47e9-b81c-5dd69bfcf86b}",
      "strict_min_version": "63.0"
    }
  },
  "permissions": [
    "bookmarks",
    "tabs",
    "storage",
    "menus",
    "sessions",
    "cookies"
  ],
  "browser_action": {
    "default_icon": {
      "16": "img/browserAction/dark.svg",
      "32": "img/browserAction/dark.svg"
    },
    "default_title": "Tabs Aside!",
    "default_popup": "html/menu/main.html",
    "browser_style": true,
    "theme_icons": [
      {
        "light": "img/browserAction/light.svg",
        "dark": "img/browserAction/dark.svg",
        "size": 16
      },
      {
        "light": "img/browserAction/light.svg",
        "dark": "img/browserAction/dark.svg",
        "size": 32
      }
    ]
  },
  "sidebar_action": {
    "default_title": "__MSG_sidebar_default_title__",
    "default_panel": "html/sidebar.html",
    "default_icon": "img/sidebar/icon.svg",
    "open_at_install": false
  },
  "background": {
    "page": "html/background.html"
  },
  "options_ui": {
    "page": "html/options.html",
    "browser_style": true
  },
  "commands": {
    "tabs-aside": {
      "suggested_key": {
        "default": "Alt+Shift+Q"
      },
      "description": "__MSG_command_tabs_aside_description__"
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+Q"
      }
    }
  }
}