🎉 Add support for older GNOME versions

utils.js

@@ -13,6 +13,8 @@
 
 'use strict';
 
+const {Gtk} = imports.gi;
+
 const ExtensionUtils = imports.misc.extensionUtils;
 const Me             = imports.misc.extensionUtils.getCurrentExtension();
 
@@ -35,3 +37,8 @@ function debug(message) {
 
   log('[' + stack[0].slice(extensionRoot) + '] ' + message);
 }
+
+// This method simply returns true if we are currently using GTK4.
+function gtk4() {
+  return Gtk.get_major_version() == 4;
+}