chore: regens API reference docs (#889)

diff --git a/docs/epy/googleapiclient.model.JsonModel-class.html b/docs/epy/googleapiclient.model.JsonModel-class.html
index a725615..a863aff 100644
--- a/docs/epy/googleapiclient.model.JsonModel-class.html
+++ b/docs/epy/googleapiclient.model.JsonModel-class.html
@@ -58,22 +58,7 @@
 <!-- ==================== CLASS DESCRIPTION ==================== -->
 <h1 class="epydoc">Class JsonModel</h1><p class="nomargin-top"><span class="codelink"><a href="googleapiclient.model-pysrc.html#JsonModel">source&nbsp;code</a></span></p>
 <center>
-<center>  <map id="uml_class_diagram_for_googleap_39" name="uml_class_diagram_for_googleap_39">
-<area shape="rect" id="node1_9" href="googleapiclient.model.JsonModel-class.html#accept" title="googleapiclient.model.JsonModel.accept" alt="" coords="103,189,309,209"/>
-<area shape="rect" id="node1_10" href="googleapiclient.model.JsonModel-class.html#content_type" title="googleapiclient.model.JsonModel.content_type" alt="" coords="103,209,309,229"/>
-<area shape="rect" id="node1_11" href="googleapiclient.model.JsonModel-class.html#alt_param" title="googleapiclient.model.JsonModel.alt_param" alt="" coords="103,229,309,249"/>
-<area shape="rect" id="node1_12" href="googleapiclient.model.JsonModel-class.html#__init__" title="Construct a JsonModel." alt="" coords="103,252,309,272"/>
-<area shape="rect" id="node1_13" href="googleapiclient.model.JsonModel-class.html#serialize" title="Perform the actual Python object serialization." alt="" coords="103,272,309,292"/>
-<area shape="rect" id="node1_14" href="googleapiclient.model.JsonModel-class.html#deserialize" title="Perform the actual deserialization from response string to Python object." alt="" coords="103,292,309,312"/>
-<area shape="rect" id="node1_15" href="googleapiclient.model.JsonModel-class.html#no_content_response" title="googleapiclient.model.JsonModel.no_content_response" alt="" coords="103,312,309,332"/>
-<area shape="rect" id="node1" href="googleapiclient.model.JsonModel-class.html" title="Model class for JSON." alt="" coords="90,165,321,339"/>
-<area shape="rect" id="node2_16" href="googleapiclient.model.BaseModel-class.html#request" title="Updates outgoing requests with a serialized body." alt="" coords="17,101,396,121"/>
-<area shape="rect" id="node2_17" href="googleapiclient.model.BaseModel-class.html#response" title="Convert the response wire format into a Python object." alt="" coords="17,121,396,141"/>
-<area shape="rect" id="node2" href="googleapiclient.model.BaseModel-class.html" title="Base model class." alt="" coords="5,68,408,147"/>
-<area shape="rect" id="node3" href="googleapiclient.model.Model-class.html" title="Model base class." alt="" coords="175,5,235,49"/>
-</map>
-  <img src="uml_class_diagram_for_googleap_39.gif" alt='' usemap="#uml_class_diagram_for_googleap_39" ismap="ismap" class="graph-without-title" />
-</center>
+
 </center>
 <hr />
 <pre class="literalblock">
@@ -221,21 +206,21 @@
     <td width="15%" align="right" valign="top" class="summary">
       <span class="summary-type">&nbsp;</span>
     </td><td class="summary">
-        <a name="accept"></a><span class="summary-name">accept</span> = <code title="'application/json'">'application/json'</code>
+        <a name="accept"></a><span class="summary-name">accept</span> = <code title="&quot;application/json&quot;">&quot;application/json&quot;</code>
     </td>
   </tr>
 <tr>
     <td width="15%" align="right" valign="top" class="summary">
       <span class="summary-type">&nbsp;</span>
     </td><td class="summary">
-        <a name="content_type"></a><span class="summary-name">content_type</span> = <code title="'application/json'">'application/json'</code>
+        <a name="content_type"></a><span class="summary-name">content_type</span> = <code title="&quot;application/json&quot;">&quot;application/json&quot;</code>
     </td>
   </tr>
 <tr>
     <td width="15%" align="right" valign="top" class="summary">
       <span class="summary-type">&nbsp;</span>
     </td><td class="summary">
-        <a name="alt_param"></a><span class="summary-name">alt_param</span> = <code title="'json'">'json'</code>
+        <a name="alt_param"></a><span class="summary-name">alt_param</span> = <code title="&quot;json&quot;">&quot;json&quot;</code>
     </td>
   </tr>
 </table>
@@ -432,7 +417,7 @@
 <table border="0" cellpadding="0" cellspacing="0" width="100%%">
   <tr>
     <td align="left" class="footer">
-    Generated by Epydoc 3.0.1 on Fri Jun 14 15:57:28 2019
+    Generated by Epydoc 3.0.1 on Thu Apr 30 17:06:06 2020
     </td>
     <td align="right" class="footer">
       <a target="mainFrame" href="http://epydoc.sourceforge.net"