Add “album_artist” tag to an opus file

I find the opusenc command (from the opus-tools package in Debian) to edit Opus files metadata. But, according to his man’s synopsis (and other sections in the man) it doesn’t provide a way to edit album_artist tag (like metaflac fro flac files or id3v for mp3 files):

opusenc  [  -h  ]  [  -V ] [ --help-picture ] [ --quiet ] [ --bitrate kbit/sec ] [ --vbr ] [ --cvbr ] [ --hard-cbr ] [ --comp complexity ] [ --framesize 2.5, 5, 10, 20, 40, 60 ] [ --expect-loss pct ] [ --downmix-mono ] [ --downmix-stereo ] [ --max-delay ms ] [ --title 'track title' ] [ --artist author ] [ --album 'album title' ] [ --genre genre ]  [  --date YYYY-MM-DD  ]  [  --comment  tag=value  ] [ --picture filename|specification ] [ --padding n ] [ --discard-comments ] [ --discard-pictures ] [ --raw ] [ --raw-bits bits/sample ] [ --raw-rate Hz ] [ --raw-chan N ] [ --raw-endianness flag ] [ --ignorelength ] [ --serial serial number ] [ --save-range file ] [ --set-ctl-int ctl=value ] input.wav output.opus

So, simply, how to add an album_artist tag to an opus file?