Examine source code of chegg skip

{
  "manifest_version": 2,
  "name": "chegg skip",
  "version": "22.4.14",
  "description": "Makes skipping a question easy in chegg",
  "icons": {
    "48": "icons/Group 1(1).png",
    "96": "icons/Group 1(2).png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://expert.chegg.com/expertqna"
      ],
      "js": [
        "chegg_skip.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1d49564-b51b-4714-80c5-31f092dd0143}"
    }
  }
}