Examine source code of Open Tab Next To Current

{
  "manifest_version": 2,
  "name": "Open Tab Next To Current",
  "version": "1.0",
  "description": "Opens new tabs immediately to the right of the current tab using a custom shortcut.",
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "open-next-tab": {
      "suggested_key": {
        "default": "Ctrl+Shift+O"
      },
      "description": "Open new tab next to current tab"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "open-tab-next-to-current@tommoran",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}