Examine source code of Tab Group Keybindings

{
  "manifest_version": 3,
  "name": "Tab Group Keybindings",
  "version": "2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9e4d6963-ead3-4326-ba54-6d2028c3ac6a}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "140.0"
    }
  },
  "permissions": [
    "tabs",
    "tabGroups"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "commands": {
    "new-tab": {
      "suggested_key": {
        "default": "Ctrl+Space"
      },
      "description": "Open new descendent tab at the end of the current tab group"
    },
    "new-tab-create-group": {
      "description": "Open new descendent tab at the end of the current tab group, create group if none exist"
    },
    "break-tab": {
      "suggested_key": {
        "default": "Ctrl+Alt+Space"
      },
      "description": "Break active tab out of the current tab group"
    },
    "toggle-collapsed": {
      "suggested_key": {
        "default": "Alt+Space"
      },
      "description": "Collapse/uncollapse the current tab group"
    }
  }
}