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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def close(self):
 """ Closes this VPCS VM. """


        if not (yield from super().close()):
            return False

        nio = self._ethernet_adapter.get_nio(0)
        if isinstance(nio, NIOUDP):
            self.manager.port_manager.release_udp_port(nio.lport, self._project)

        if self._local_udp_tunnel:
            self.manager.port_manager.release_udp_port(self._local_udp_tunnel[0].lport, self._project)
            self.manager.port_manager.release_udp_port(self._local_udp_tunnel[1].lport, self._project)
            self._local_udp_tunnel = None

        yield from self._stop_ubridge()

        if self.is_running():
            self._terminate_process()

        return True