def _WarnIfCustomTarget(self, target):
    """Emit a warning if a policy's default target is not a built-in chain."""
    if self._GOOD_FILTERS not in target:
      logging.warn('Filter is generating a non-standard chain that will not '
                   'apply to traffic unless linked from INPUT, OUTPUT or '
                   'FORWARD filters. New chain name is: %s', target)
dataset/ETHPy150Open google/capirca/lib/iptables.py/Iptables._WarnIfCustomTarget/swapped operands of `not in`