Gtk.IconTheme.prototype.set_custom_theme

function set_custom_theme(theme_name:String):void {
    // Gjs wrapper for gtk_icon_theme_set_custom_theme()
}

Sets the name of the icon theme that the Gtk.IconTheme object uses overriding system configuration. This function cannot be called on the icon theme objects returned from Gtk.get_default and Gtk.get_for_screen.

Since 2.4