public boolean removeTunnel(String uuid) {
        this.access();
        return tunnels.remove(uuid) != null;
    }
Disassociates the tunnel having the given UUID from this session.
Invoking this function automatically updates this session's last access
time.

@param uuid
    The UUID of the tunnel to disassociate from this session.

@return
    true if the tunnel existed and was removed, false otherwise.
guacamole/src/main/java/org/apache/guacamole/GuacamoleSession.java