[Dovecot] virtual spam maildir directory

[Gert Cuykens]

dovecot   unix  -       n       n       -       -       pipe
  flags=DRhu user=mail:mail argv=/usr/lib/dovecot/deliver -f ${sender}
-d ${recipient}

is there anyway i can tell dovecot to put spam labeled headers from
spamassasin into a maildir spam folder