meta,
    seek=false,
    handles-states=true,
    args = {
        "audiotestsrc num-buffers=4 ! encodebin name=ebin profile=\"vorbisenc|element-properties,managed=true,name=audioencoder\" ! fakesink",
    }

pause
check-properties, audioencoder::managed=true

set-properties, ebin::profile::element-properties=[
    element-properties-map, map = {
        [vorbisenc, managed=false],
        [somethingelse, whatever=false],
    },
]

check-properties, audioencoder::managed=false

stop