def _unset_source_mac(self):
    self.__source_mac = YANGDynClass(base=unicode, is_leaf=True, yang_name='source-mac', rest_name='source-mac', parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:brocade.com:mgmt:brocade-openflow-operational', defining_module='brocade-openflow-operational', yang_type='string', is_config=False)
def _unset_source_mac(self):
    self.__source_mac = YANGDynClass(base=unicode, is_leaf=True, yang_name='source-mac', rest_name='source-mac', parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:brocade.com:mgmt:brocade-openflow-operational', defining_module='brocade-openflow-operational', yang_type='string', is_config=False)