Wireshark-users: [Wireshark-users] tshark option to decrypt SSL?

From: James Hozier <guitarscn1@xxxxxxxxx>
Date: Thu, 9 Sep 2010 07:30:41 -0700 (PDT)
Here is what I have so far:
tshark -tad -lnx -d tcp.port==4040,irc -R 'irc'

What should I add in order for it to capture and also decrypt SSL traffic
as well, with the private server certificate on the machine this is being
run from?