[Click] Question about MAC protocol

[KC Huang]

Hi all:

I am new to use Click and want to implement some MAC protocols like CSMA or 
TDMA on Click. After searching the website and mailing archive, I cannot find  
any examples or codes about MAC. So, I wonder that if there are any hints or 
information about how to implement MAC protocols on Click platform? it would 
be better if there are any examples that I can refer.

Thanks very much in advance!!

KC Huang