def irc_nick_changed(self, nick):
        pass
L{extractField} will extract a field used in the format string.
dataset/ETHPy150Open ecdavis/pants/pants/contrib/irc.py/IRCClient.irc_nick_changed--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/logger/test/test_flatten.py/FlatFormattingTests.test_extractField