$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Gnome Extensions App in Debian Gnu/Linux Distro

GNU/Linux Debian Installing GNOME Extensions App Guide

Hi! The Tutorial shows you Step-by-Step How to Install GNOME Extensions Flatpak App in Debian GNU/Linux Desktops.

And GNOME Extensions App for Debian handles Updating Extensions, Configuring Extension Preferences and Removing or Disabling them.

Especially relevant: starting from the GNOME 41 release the Shell Extensions are not any more manageable by the Tweaks but just with the App.

How to Install GNOME Extensions App Flatpak on Debian - Featured

GNU/Linux Debian GNOME Extensions Application Installation Guide