Examine source code of Mem Password Gen

{
  "manifest_version": 3,
  "name": "Mem Password Gen",
  "version": "1.0",
  "description": "Memorable password generator",
  "permissions": [
    "storage",
    "activeTab",
    "clipboardWrite"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon48.png"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Comma",
        "mac": "MacCtrl+Comma"
      },
      "description": "Open Mem Password Gen"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mem-password-gen@jonas",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}