<arg>
	<arg choice='plain'><option>--will-topic</option> <replaceable>topic</replaceable></arg>
	<arg><option>--will-payload</option> <replaceable>payload</replaceable></arg>
	<arg><option>--will-qos</option> <replaceable>qos</replaceable></arg>
	<arg><option>--will-retain</option></arg>
</arg>
