export def lumen-kwin-get-class [waittimesec: int]: nothing -> string {
  if ($waittimesec == 0) {
    qdbus6 org.kde.KWin /KWin queryWindowInfo
  } else {
    for $i in $waittimesec..1 {
      $i | print
      sleep 1sec
    }
    qdbus6 org.kde.KWin /KWin queryWindowInfo
  }
}