@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
@prefix patch: <http://lv2plug.in/ns/ext/patch#> .
@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix ingen: <http://drobilla.net/ns/ingen#> .
@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
@prefix lv2ev: <http://lv2plug.in/ns/ext/event#> .
@prefix midi: <http://lv2plug.in/ns/ext/midi#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<control_in>
	ingen:polyphonic false ;
	atom:bufferType atom:Sequence ;
	lv2:index 0 ;
	lv2:name "Control" ;
	lv2:portProperty lv2:connectionOptional ;
	lv2:symbol "control_in" ;
	a atom:AtomPort ,
		lv2:InputPort .

<control_out>
	ingen:polyphonic false ;
	atom:bufferType atom:Sequence ;
	lv2:index 1 ;
	lv2:name "Control" ;
	lv2:symbol "control_out" ;
	a atom:AtomPort ,
		lv2:OutputPort .

<>
	ingen:polyphony 1 ;
	<http://lv2plug.in/ns/extensions/ui#ui> ingen:GraphUIGtk2 ;
	lv2:extensionData <http://lv2plug.in/ns/ext/state#interface> ;
	lv2:port <control_in> ,
		<control_out> ;
	lv2:symbol "empty" ;
	doap:name "empty" ;
	a ingen:Patch ,
		lv2:Plugin .