Examine source code of Annotier Extension

{
  "manifest_version" : 3 ,
  "name" : "Annotier Extension",
  "short_name" : "Annotier",
  "version" : "1.0",
  "description" : "Bring discussions into your browsing — view and edit comments from https://annotier.com/ directly in your sidebar.",
  "icons" : {
    "256" : "icons/Anntier_v4_round.png"
  },
  "permissions" : [
    "activeTab" ,
    "tabs" 
  ],
  "content_scripts" : [
    {
      "all_frames" : true ,
      "matches" : [
        "https://annotier.com/extension/iframe*" 
      ],
      "js" : [
        "content_scripts/content-script.js" 
      ]
    }
  ],
  "host_permissions" : [
    "https://annotier.com/*" 
  ],
  "homepage_url" : "https://annotier.com/extension",
  "incognito" : "not_allowed" ,
  "developer": {
    "name" : "Tonnot UG (haftungsbeschränkt)",
    "url": "https://tonnot.eu/"
  },
  "action" : {
    "default_icon" : "icons/Anntier_v4_round.png",
    "default_title" : "Annotier",
    "default_popup" : "popup/annotier_popup.html"
  },
  "sidebar_action": {
    "default_title" : "Annotier",
    "browser_style": false,
    "default_panel": "sidebar/sidebar.html",
    "default_icon" : "icons/Anntier_v4_round.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@annotier-extension.tonnot-ug",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  }
}