chore: regens API reference docs (#889)

diff --git a/docs/dyn/calendar_v3.freebusy.html b/docs/dyn/calendar_v3.freebusy.html
index 1f58c5d..645445f 100644
--- a/docs/dyn/calendar_v3.freebusy.html
+++ b/docs/dyn/calendar_v3.freebusy.html
@@ -75,15 +75,15 @@
 <h1><a href="calendar_v3.html">Calendar API</a> . <a href="calendar_v3.freebusy.html">freebusy</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#query">query(body)</a></code></p>
+  <code><a href="#query">query(body=None)</a></code></p>
 <p class="firstline">Returns free/busy information for a set of calendars.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="query">query(body)</code>
+    <code class="details" id="query">query(body=None)</code>
   <pre>Returns free/busy information for a set of calendars.
 
 Args:
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 {