def do_where(self, arg=None):
        return self.call('do_where')
Called after writing each message to file f.
dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/contrib/qdb.py/Frontend.do_where--crossover with--dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/MMDF._post_message_hook