p;&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Gcloud</span>.<span class="constructor">PubSub</span>.topic&nbsp;<span class="constructor">BsAsyncMonad</span>.<span class="constructor">Callback</span>.t<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;publish&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Gcloud</span>.<span class="constructor">PubSub</span>.topic&nbsp;<span class="