Examine source code of SUSCHEGG Unlocker

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "SUSCHEGG Unlocker",
  "version": "4.0",
  "manifest_version": 3,
  "description": "This extension will unlock answers on demand.",
  "homepage_url": "http://suschegg.com/",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon-512.png"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "default_locale": "en",
  "action": {
    "default_icon": "icons/icon-128.png",
    "default_title": "SUSCHEGG Unlocker",
    "default_popup": "src/browser_action/browser_action.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.chegg.com/*",
        "https://*.bartleby.com/questions-and-answers/*",
        "https://*.bartleby.com/solution-answer/*",
        "https://*.coursehero.com/file/*",
        "https://*.coursehero.com/tutors-problems/*",
        "https://*.quizlet.com/explanations/*",
        "https://*.numerade.com/ask/question/*",
        "https://*.numerade.com/amp/*",
        "https://*.numerade.com/questions/*",
        "https://*.study.com/academy/answer/*",
        "https://*.study.com/academy/lesson/*",
        "https://*.study.com/learn/lesson/*",
        "https://homework.study.com/explanation/*",
        "https://*.scribd.com/document/*",
        "https://*.scribd.com/doc/*",
        "https://*.scribd.com/presentation/*"
      ],
      "js": [
        "src/inject/inject.js"
      ],
      "css": [
        "src/inject/inject.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "suscheggunlocker@suschegg.com"
    }
  }
}