Java Cometd Request Headers

[Jeff Nuss]

I've looked all over and haven't been able to find a clear answer to this question. Using the Java cometd library (not javascript), how can I add a request header to each Bayuex message that gets sent? In the javascript library, you can use cometd.config and pass it the configuration params as seen here: 

http://cometd.org/documentation/cometd-javascript/configuration

Also, this post mentions overriding the customize method on LongPollingTransport:

https://groups.google.com/forum/?fromgroups#!topic/cometd-users/-Mvdu1wOFq4

However, it doesn't seem apparent to me how overriding this method helps. If someone could provide some guidance, that would be awesome. Thanks.