def __call__(self, obj, do_raise=False):

        try:
            return super(EmptyStringSelector, self).__call__(obj, True)
        except KeyError:
            return ""
The dispatcher that created the log record.  Might not exist because
dataset/ETHPy150Open openstack/rack/rack/api/xmlutil.py/EmptyStringSelector.__call__--crossover with--dataset/ETHPy150Open getlogbook/logbook/logbook/base.py/LogRecord.dispatcher