Examine source code of MindTapFocusExtension

{
  "manifest_version": 2,
  "name": "MindTapFocusExtension",
  "version": "1.0",
  "description": "Removes sidebar elements from Cengage MindTap.",
  "background": {
    "scripts": [
      "Background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://ng.cengage.com/*"
      ],
      "js": [
        "CengageContentScript.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/cengagemindtapicon.png",
    "default_title": "HideCengageSidebars"
  },
  "permissions": [
    "*://ng.cengage.com/static/nb/ui/evo/index.html*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2ca485ad-a9b0-464d-9d8e-dc51a6f758d5}"
    }
  }
}