Examine source code of Auto Refresh Extension

{
  "manifest_version": 3,
  "name": "Auto Refresh Extension",
  "version": "2.2.3",
  "description": "Auto refresh selected URLs at any interval you set, with per-URL controls and Refresh Now (Firefox/MV3)",
  "action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@Auto-Refresh-Extension",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "140.0"
    },
    "gecko_android": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  }
}