Examine source code of Tabs2List

{
  "developer": {
    "name": "EffPeh"
  },
  "sidebar_action": {
    "default_icon": "icons/icon.svg",
    "default_title": "__MSG_extension_name__",
    "default_panel": "popup/sidebar.html"
  },
  "description": "__MSG_extension_description__",
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "version": "1.5resigned1",
  "icons": {
    "48": "icons/icon.svg"
  },
  "permissions": [
    "tabs",
    "tabHide",
    "sessions",
    "storage",
    "downloads"
  ],
  "browser_action": {
    "default_icon": "icons/icon.svg",
    "theme_icons": [
      {
        "light": "icons/icon-light.svg",
        "dark": "icons/icon-dark.svg",
        "size": 32
      }
    ],
    "default_title": "__MSG_extension_name__",
    "default_popup": "popup/popup.html",
    "browser_style": true
  },
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+1"
      }
    },
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+2"
      }
    }
  },
  "options_ui": {
    "browser_style": true,
    "page": "options/options.html",
    "open_in_tab": true
  },
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "TabsList@example.com",
      "strict_min_version": "60.0"
    }
  }
}