Examine source code of Containers Helper

{
  "manifest_version": 2,
  "name": "Containers Helper",
  "version": "0.1.4",
  "description": "Helps improve container management by providing container searching, deleting, renaming, duplicating, and default URLs on a per-container or bulk basis.",
  "icons": {
    "48": "icons/icon_cube.svg",
    "96": "icons/icon_cube.svg",
    "128": "icons/icon_cube.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{800215d6-eff0-4a62-9268-09857c048030}",
      "strict_min_version": "57.0"
    }
  },
  "permissions": [
    "activeTab",
    "contextualIdentities",
    "cookies",
    "tabs",
    "storage",
    "unlimitedStorage"
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/icon_cube.svg",
    "default_title": "Containers Helper",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+D",
        "mac": "Command+Shift+E"
      },
      "description": "Open containers helper panel"
    }
  },
  "options_ui": {
    "page": "options-redir.html",
    "browser_style": false
  }
}