Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/appengine_v1alpha.apps.html b/docs/dyn/appengine_v1alpha.apps.html
index a4ae81c..3415a8d 100644
--- a/docs/dyn/appengine_v1alpha.apps.html
+++ b/docs/dyn/appengine_v1alpha.apps.html
@@ -72,9 +72,24 @@
 
 </style>
 
-<h1><a href="appengine_v1alpha.html">Google App Engine Admin API</a> . <a href="appengine_v1alpha.apps.html">apps</a></h1>
+<h1><a href="appengine_v1alpha.html">App Engine Admin API</a> . <a href="appengine_v1alpha.apps.html">apps</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
+  <code><a href="appengine_v1alpha.apps.authorizedCertificates.html">authorizedCertificates()</a></code>
+</p>
+<p class="firstline">Returns the authorizedCertificates Resource.</p>
+
+<p class="toc_element">
+  <code><a href="appengine_v1alpha.apps.authorizedDomains.html">authorizedDomains()</a></code>
+</p>
+<p class="firstline">Returns the authorizedDomains Resource.</p>
+
+<p class="toc_element">
+  <code><a href="appengine_v1alpha.apps.domainMappings.html">domainMappings()</a></code>
+</p>
+<p class="firstline">Returns the domainMappings Resource.</p>
+
+<p class="toc_element">
   <code><a href="appengine_v1alpha.apps.locations.html">locations()</a></code>
 </p>
 <p class="firstline">Returns the locations Resource.</p>