Examine source code of Jira Issue Copy

{
  "name": "Jira Issue Copy",
  "version": "1.1resigned1",
  "description": "Allows selecting of the issue key + name and then converting that to a valid branch name.",
  "permissions": [
    "clipboardWrite",
    "activeTab"
  ],
  "browser_action": {
    "default_title": "Copy JIRA Branch",
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{c04b4dcd-d68e-4dc2-bc19-f29c00aecf69}"
    }
  }
}