Examine source code of CheckboxDeselectionHelper

{
  "manifest_version": 2,
  "name": "CheckboxDeselectionHelper",
  "version": "1.1.1resigned1",
  "applications": {
    "gecko": {
      "id": "donotrackme@slodowski.net",
      "strict_min_version": "57.0"
    }
  },
  "description": "Can toggle specific checkboxes in html page based on its name starts with.",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "toggle.js"
      ]
    }
  ]
}