def copy(self):
        return self.__class__(self._rawHeaders)
Helper method for checking vlan transparecncy support.
dataset/ETHPy150Open twisted/twisted/twisted/web/http_headers.py/Headers.copy--crossover with--dataset/ETHPy150Open openstack/neutron/neutron/plugins/ml2/managers.py/MechanismManager._check_vlan_transparency