_ardour_buttons_box.pack_end (add_button, false, false);
_ardour_buttons_box.pack_end (_preset_combo, false, false);
_ardour_buttons_box.pack_end (_preset_modified, false, false);
+ _ardour_buttons_box.pack_end (pin_management_button, false, false);
plugin->PresetLoaded.connect (*this, invalidator (*this), boost::bind (&LV2PluginUI::queue_port_update, this), gui_context ());
}