Examine source code of CiscoWebex helper

{
  "name": "CiscoWebex helper",
  "version": "3.0",
  "description": "This extension add some event to your CiscoWebex video (Polimi)",
  "icons": {
    "16": "images/logo16.png",
    "32": "images/logo32.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "page_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/logo16.png",
      "32": "images/logo32.png",
      "48": "images/logo48.png",
      "128": "images/logo128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.webex.com/*",
        "*://polimi365.sharepoint.com/sites/recordings/*"
      ],
      "js": [
        "jquery.min.js",
        "jquery-ui.custom.min.js",
        "jquery.simulate.js",
        "jquery.simulate.ext.js",
        "jquery.simulate.drag-n-drop.js",
        "helper.js"
      ],
      "run_at": "document_end"
    }
  ],
  "manifest_version": 2
}