@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
@prefix ui:   <http://lv2plug.in/ns/extensions/ui#> .
@prefix opts: <http://lv2plug.in/ns/ext/options#> .

<http://jpcima.sdf1.org/lv2/stone-phaser-stereo#UI>
    lv2:extensionData opts:interface ,
                      ui:idleInterface ,
                      ui:showInterface ,
                      ui:resize ;

    lv2:optionalFeature ui:noUserResize ,
                        ui:resize ,
                        ui:touch ;

    lv2:requiredFeature opts:options ,
                        <http://lv2plug.in/ns/ext/urid#map> ;

    opts:supportedOption <http://lv2plug.in/ns/ext/parameters#sampleRate> .