Adds pages from Gtk.Builder
Example
using Gtk 4.0;
using Tuner 1;
translation-domain "my-translations";
Tuner.Page {
tag: "my-page-tag";
title: _("Translatable title");
...
}
Tuner.Page {
// Add page with tag appearance
// If page with that tag already added
// Their content will be merged
tag: "appearance";
title: _("Appearance");
...
}