Command to start the uBridge hypervisor process.
        (to be passed to subprocess.Popen())

def _build_command(self):
        """
        Command to start the uBridge hypervisor process.
        (to be passed to subprocess.Popen())
        """

        command = [self._path]
        command.extend(["-H", "{}:{}".format(self._host, self._port)])
        if log.getEffectiveLevel() == logging.DEBUG:
            command.extend(["-d", "2"])
        return command