Examine source code of Move tabs and groups

{
  "name": "Move tabs and groups",
  "description": "Move tabs and tab groups around using keyboard shortcuts. Also pin/unpin/ungroup tabs or create a new tab in the current group.",
  "version": "2.0.0",
  "manifest_version": 3,
  "icons": {
    "16": "/icons/icon16.png",
    "32": "/icons/icon32.png",
    "48": "/icons/icon48.png",
    "64": "/icons/icon64.png",
    "128": "/icons/icon128.png"
  },
  "permissions": [
    "tabGroups"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "group--move-direction--left": {
      "suggested_key": {
        "default": "Alt+Shift+Comma",
        "mac": "Command+MacCtrl+Comma"
      },
      "description": "Group: Move left"
    },
    "group--move-direction--right": {
      "suggested_key": {
        "default": "Alt+Shift+Period",
        "mac": "Command+MacCtrl+Period"
      },
      "description": "Group: Move right"
    },
    "group--move-to-end--1-start": {
      "description": "Group: Move to start"
    },
    "group--move-to-end--2-end": {
      "description": "Group: Move to end"
    },
    "group--move-to-window--1-previous": {
      "description": "Group: Move to previous window"
    },
    "group--move-to-window--2-next": {
      "description": "Group: Move to next window"
    },
    "group--new-tab": {
      "description": "Group: New tab in current group"
    },
    "tab--move-direction--left": {
      "suggested_key": {
        "default": "Alt+Shift+Left",
        "mac": "Command+MacCtrl+Left"
      },
      "description": "Tab: Move left"
    },
    "tab--move-direction--right": {
      "suggested_key": {
        "default": "Alt+Shift+Right",
        "mac": "Command+MacCtrl+Right"
      },
      "description": "Tab: Move right"
    },
    "tab--move-to-end--1-start": {
      "description": "Tab: Move to start"
    },
    "tab--move-to-end--2-end": {
      "description": "Tab: Move to end"
    },
    "tab--move-to-window--1-previous": {
      "description": "Tab: Move to previous window"
    },
    "tab--move-to-window--2-next": {
      "description": "Tab: Move to next window"
    },
    "tab--toggle-pinned": {
      "description": "Tab: Pin/Unpin"
    },
    "tab--ungroup": {
      "description": "Tab: Ungroup"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "movetabs.virtual438@aleeas.com"
    }
  }
}