stopMachine.java

@Override
public boolean stopMachine(final String ip, final long duration, final TimeUnit unit)
		throws InterruptedException, TimeoutException, CloudProvisioningException {
	final long endTime = calcEndTimeInMillis(
			duration, unit);

	if (isStopRequestRecent(ip)) {
		return false;
	}

	final String token = createAuthenticationToken();

	try {
		terminateServerByIp(
				ip, token, endTime);
		return true;
	} catch (final Exception e) {
		throw new CloudProvisioningException(e);
	}
}