rs will be returned,
          but no error event is created.
</li></ul></div></div><div class="top"><p class="src"><a name="v:showRegistry" class="def">showRegistry</a> :: <a href="Network-Mom-Stompl-Patterns-Basic.html#t:Registry">Registry</a> -&gt; IO ()</p><div class="doc"><p>This function shows all jobs with all their providers
   in a registry; the function is intended for debugging only.
</p></div></div><div class="top"><p class="src"><span class="keyword">data</span>  <a name="t:Provider" class="def