def __init__(self, groups=None):
        super(GroupedRequirements, self).__init__(NamedRequirements)
        self.groups = groups or self.default_groups
        self.filename = None
        self.create_default_groups()
def query_vpp_config(self):
        ds = list(self._test.vapi.vpp.details_iter(
            self._test.vapi.ip_path_mtu_get))

        for d in ds:
            if self.nh == str(d.pmtu.nh) \
               and self.table_id == d.pmtu.table_id \
               and self.pmtu == d.pmtu.path_mtu:
                return True
        return False