Sub</span>.msg&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;subscribe&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Gcloud</span>.<span class="constructor">PubSub</span>.subscription&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;(<span class="constructor">Gcloud</span>.<span class="constructor">PubSub</span>.msg&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit)&nbsp;<span cla