public JID getReportedFmucAddress() {
        return reportedFmucJID;
    }
Obtain the XMPPAddress representing this occupant in a room in context of FMUC. This typically represents the
XMPPAddress as it is known locally at the joining FMUC node.

For users that are joined through FMUC from a remote node, this method will return the value as reported by the
joining FMUC node.

For users that are in the room, but connected directly to this instance of Openfire, this method returns null,
even if the room is part of an FMUC node.

Users that joined through server-to-server federation (as opposed to FMUC), will not have a FMUC address. Null is
returned by this method for these users.

@return The address of the user that joined the room through FMUC from a remote domain, or null.
xmppserver/src/main/java/org/jivesoftware/openfire/muc/MUCOccupant.java