 This method deletes the state being maintained on behalf of the subscriber by its provider.

 <p>
 It is erroneous for a client to delete a durable subscription while there is an active <code>TopicSubscriber</code> for
 the subscription, or while a consumed message is part of a pending transaction or has not been acknowledged in the
 session.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../jakarta/jms/Session.html#unsubscribe-java.lang.String-">unsubscri