Examine source code of Tabox - Tab Manager, Save & Share Tab Groups

{
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "sync-session-state.js",
      "sync-transport.js",
      "sync-merge.js",
      "sync-apply.js",
      "sync-throttle.js",
      "pro-config.js",
      "background-utils.js",
      "push-client.js",
      "pro-entitlement.js",
      "shared-folders.js",
      "ai-client.js",
      "ai-planners.js",
      "ai-storage.js",
      "ai-registry.js",
      "ai-engine.js",
      "ai-task-auto-rename.js",
      "ai-task-auto-arrange.js",
      "ai-task-smart-organize.js",
      "duplicate-detect.js",
      "duplicate-sweep.js",
      "ai-task-duplicate-sweep.js",
      "split-collection.js",
      "ai-task-split-collection.js",
      "background.js"
    ]
  },
  "action": {
    "default_icon": "icons/icon128.png",
    "default_popup": "index.html",
    "default_title": "Save and share your tabs!"
  },
  "description": "Save your open tabs into collections and reopen them whenever you want in a single click!",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "manifest_version": 3,
  "name": "Tabox - Tab Manager, Save & Share Tab Groups",
  "incognito": "spanning",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "commands": {
    "open-collection-1": {
      "suggested_key": {
        "default": "Ctrl+Shift+1",
        "mac": "Command+Shift+1"
      },
      "description": "Open the first collection in your list"
    },
    "open-collection-2": {
      "suggested_key": {
        "default": "Ctrl+Shift+2",
        "mac": "Command+Shift+2"
      },
      "description": "Open the 2nd collection in your list"
    },
    "open-collection-3": {
      "suggested_key": {
        "default": "Ctrl+Shift+3",
        "mac": "Command+Shift+3"
      },
      "description": "Open the 3rd collection in your list"
    },
    "open-collection-4": {
      "suggested_key": {
        "default": "Ctrl+Shift+4",
        "mac": "Command+Shift+4"
      },
      "description": "Open the 4th collection in your list"
    }
  },
  "permissions": [
    "tabs",
    "tabGroups",
    "storage",
    "sessions",
    "identity",
    "unlimitedStorage",
    "contextMenus",
    "alarms"
  ],
  "optional_permissions": [
    "notifications"
  ],
  "host_permissions": [
    "https://www.googleapis.com/",
    "https://oauth2.googleapis.com/"
  ],
  "version": "4.2.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "tabox@tabox.co",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}