def close_fd(self):
        raise NotImplementedError()
List Neutron ports
dataset/ETHPy150Open RobotWebTools/rosbridge_suite/rosbridge_server/src/tornado/iostream.py/BaseIOStream.close_fd--crossover with--dataset/ETHPy150Open CiscoCloud/mantl/roles/calico/files/neutron_port_update.py/list_ports