Preventing the InvitationDialog from showing

I am packing a bunch of meta-data in special MUC invititions. I am capable of intercepting the invitations and checking for the meta-data correctly, by registering an InvitationListener with the MultiUserChat object (Smack API stuff).

However, when my meta-data is present, I don’'t want the InvitationDialog to be shown. I intend to provide my own dialog and initiate the chat myself. There are two main reasons for doing this: (1) I want the invitation to be accepted automatically, and (2) to pack the meta-data inside the chat window, so that user can see it while chatting.

So, is there a way to prevent the InvitationDialog from being shown? I imagine that somewhere it registers its own InvitationListener. Is there a way I can locate this object to un-register it?

Thank you,

David Snopek.