Add epydoc generated docs. Reviewed in http://codereview.appspot.com/6305043/
diff --git a/docs/epy/oauth2client.client.OAuth2Credentials-class.html b/docs/epy/oauth2client.client.OAuth2Credentials-class.html
new file mode 100644
index 0000000..c96aca6
--- /dev/null
+++ b/docs/epy/oauth2client.client.OAuth2Credentials-class.html
@@ -0,0 +1,889 @@
+<?xml version="1.0" encoding="ascii"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+          "DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>oauth2client.client.OAuth2Credentials</title>
+  <link rel="stylesheet" href="epydoc.css" type="text/css" />
+  <script type="text/javascript" src="epydoc.js"></script>
+</head>
+
+<body bgcolor="white" text="black" link="blue" vlink="#204080"
+      alink="#204080">
+<!-- ==================== NAVIGATION BAR ==================== -->
+<table class="navbar" border="0" width="100%" cellpadding="0"
+       bgcolor="#a0c0ff" cellspacing="0">
+  <tr valign="middle">
+
+  <!-- Tree link -->
+      <th>&nbsp;&nbsp;&nbsp;<a
+        href="module-tree.html">Trees</a>&nbsp;&nbsp;&nbsp;</th>
+
+  <!-- Index link -->
+      <th>&nbsp;&nbsp;&nbsp;<a
+        href="identifier-index.html">Indices</a>&nbsp;&nbsp;&nbsp;</th>
+
+  <!-- Help link -->
+      <th>&nbsp;&nbsp;&nbsp;<a
+        href="help.html">Help</a>&nbsp;&nbsp;&nbsp;</th>
+
+      <th class="navbar" width="100%"></th>
+  </tr>
+</table>
+<table width="100%" cellpadding="0" cellspacing="0">
+  <tr valign="top">
+    <td width="100%">
+      <span class="breadcrumbs">
+        <a href="oauth2client-module.html">Package&nbsp;oauth2client</a> ::
+        <a href="oauth2client.client-module.html">Module&nbsp;client</a> ::
+        Class&nbsp;OAuth2Credentials
+      </span>
+    </td>
+    <td>
+      <table cellpadding="0" cellspacing="0">
+        <!-- hide/show private -->
+        <tr><td align="right"><span class="options">[<a href="javascript:void(0);" class="privatelink"
+    onclick="toggle_private();">hide&nbsp;private</a>]</span></td></tr>
+        <tr><td align="right"><span class="options"
+            >[<a href="frames.html" target="_top">frames</a
+            >]&nbsp;|&nbsp;<a href="oauth2client.client.OAuth2Credentials-class.html"
+            target="_top">no&nbsp;frames</a>]</span></td></tr>
+      </table>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS DESCRIPTION ==================== -->
+<h1 class="epydoc">Class OAuth2Credentials</h1><p class="nomargin-top"><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials">source&nbsp;code</a></span></p>
+<center>
+<center>  <map id="uml_class_diagram_for_oauth2cl_19" name="uml_class_diagram_for_oauth2cl_19">
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#access_token_expired" title="True if the credential is expired or invalid." alt="" coords="17,116,719,135"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#__init__" title="Create an instance of OAuth2Credentials." alt="" coords="17,137,719,156"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#authorize" title="Authorize an httplib2.Http instance with these credentials." alt="" coords="17,156,719,175"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#refresh" title="Forces a refresh of the access_token." alt="" coords="17,175,719,193"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#apply" title="Add the authorization to the headers." alt="" coords="17,193,719,212"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#to_json" title="Creating a JSON representation of an instance of Credentials." alt="" coords="17,212,719,231"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#from_json" title="Instantiate a Credentials object from a JSON description of it." alt="" coords="17,231,719,249"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#set_store" title="Set the Storage for the credential." alt="" coords="17,249,719,268"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#__getstate__" title="Trim the state down to something that can be pickled." alt="" coords="17,268,719,287"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html#__setstate__" title="Reconstitute the state of the object from being pickled." alt="" coords="17,287,719,305"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html" title="Credentials object for OAuth 2.0." alt="" coords="16,99,720,307"/>
+<area shape="rect" href="oauth2client.client.AssertionCredentials-class.html" title="Abstract Credentials object used for OAuth 2.0 assertion grants." alt="" coords="204,336,337,363"/>
+<area shape="rect" href="oauth2client.client.AccessTokenCredentials-class.html" title="Credentials object for OAuth 2.0." alt="" coords="388,336,545,363"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#NON_SERIALIZED_MEMBERS" title="oauth2client.client.Credentials.NON_SERIALIZED_MEMBERS" alt="" coords="273,28,463,47"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#new_from_json" title="Utility class method to instantiate a Credentials subclass from a JSON representation produced by to_json()." alt="" coords="273,49,463,68"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html" title="Base class for all Credentials objects." alt="" coords="272,11,464,69"/>
+<area shape="rect" href="oauth2client.client.SignedJwtAssertionCredentials-class.html" title="Credentials object used for OAuth 2.0 Signed JWT assertion grants." alt="" coords="47,392,239,419"/>
+<area shape="rect" href="oauth2client.appengine.AppAssertionCredentials-class.html" title="Credentials object for App Engine Assertion Grants" alt="" coords="289,392,511,419"/>
+</map>
+  <img src="uml_class_diagram_for_oauth2cl_19.gif" alt='' usemap="#uml_class_diagram_for_oauth2cl_19" ismap="ismap" class="graph-without-title" />
+</center>
+</center>
+<hr />
+<pre class="literalblock">
+Credentials object for OAuth 2.0.
+
+Credentials can be applied to an httplib2.Http object using the authorize()
+method, which then adds the OAuth 2.0 access token to each request.
+
+OAuth2Credentials objects may be safely pickled and unpickled.
+
+</pre>
+
+<!-- ==================== INSTANCE METHODS ==================== -->
+<a name="section-InstanceMethods"></a>
+<table class="summary" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+  <td colspan="2" class="table-header">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Instance Methods</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-InstanceMethods"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">access_token</span>,
+        <span class="summary-sig-arg">client_id</span>,
+        <span class="summary-sig-arg">client_secret</span>,
+        <span class="summary-sig-arg">refresh_token</span>,
+        <span class="summary-sig-arg">token_expiry</span>,
+        <span class="summary-sig-arg">token_uri</span>,
+        <span class="summary-sig-arg">user_agent</span>,
+        <span class="summary-sig-arg">id_token</span>=<span class="summary-sig-default">None</span>)</span><br />
+      Create an instance of OAuth2Credentials.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.__init__">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#authorize" class="summary-sig-name">authorize</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">http</span>)</span><br />
+      Authorize an httplib2.Http instance with these credentials.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.authorize">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#refresh" class="summary-sig-name">refresh</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">http</span>)</span><br />
+      Forces a refresh of the access_token.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.refresh">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#apply" class="summary-sig-name">apply</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">headers</span>)</span><br />
+      Add the authorization to the headers.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.apply">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#to_json" class="summary-sig-name">to_json</a>(<span class="summary-sig-arg">self</span>)</span><br />
+      Creating a JSON representation of an instance of Credentials.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.to_json">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#set_store" class="summary-sig-name">set_store</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">store</span>)</span><br />
+      Set the Storage for the credential.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.set_store">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr class="private">
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a name="_updateFromCredential"></a><span class="summary-sig-name">_updateFromCredential</span>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">other</span>)</span><br />
+      Update this Credential from another instance.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._updateFromCredential">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a name="__getstate__"></a><span class="summary-sig-name">__getstate__</span>(<span class="summary-sig-arg">self</span>)</span><br />
+      Trim the state down to something that can be pickled.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.__getstate__">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a name="__setstate__"></a><span class="summary-sig-name">__setstate__</span>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">state</span>)</span><br />
+      Reconstitute the state of the object from being pickled.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.__setstate__">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr class="private">
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a name="_generate_refresh_request_body"></a><span class="summary-sig-name">_generate_refresh_request_body</span>(<span class="summary-sig-arg">self</span>)</span><br />
+      Generate the body that will be used in the refresh request.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._generate_refresh_request_body">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr class="private">
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a name="_generate_refresh_request_headers"></a><span class="summary-sig-name">_generate_refresh_request_headers</span>(<span class="summary-sig-arg">self</span>)</span><br />
+      Generate the headers that will be used in the refresh request.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._generate_refresh_request_headers">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr class="private">
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#_refresh" class="summary-sig-name" onclick="show_private();">_refresh</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">http_request</span>)</span><br />
+      Refreshes the access_token.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._refresh">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr class="private">
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#_do_refresh_request" class="summary-sig-name" onclick="show_private();">_do_refresh_request</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">http_request</span>)</span><br />
+      Refresh the access_token using the refresh_token.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._do_refresh_request">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <div class="private">    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.Credentials-class.html">Credentials</a></code></b> (private):
+      <code><a href="oauth2client.client.Credentials-class.html#_to_json" onclick="show_private();">_to_json</a></code>
+      </p></div>
+    <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
+      <code>__delattr__</code>,
+      <code>__format__</code>,
+      <code>__getattribute__</code>,
+      <code>__hash__</code>,
+      <code>__new__</code>,
+      <code>__reduce__</code>,
+      <code>__reduce_ex__</code>,
+      <code>__repr__</code>,
+      <code>__setattr__</code>,
+      <code>__sizeof__</code>,
+      <code>__str__</code>,
+      <code>__subclasshook__</code>
+      </p>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS METHODS ==================== -->
+<a name="section-ClassMethods"></a>
+<table class="summary" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+  <td colspan="2" class="table-header">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Class Methods</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-ClassMethods"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.client.OAuth2Credentials-class.html#from_json" class="summary-sig-name">from_json</a>(<span class="summary-sig-arg">cls</span>,
+        <span class="summary-sig-arg">s</span>)</span><br />
+      Instantiate a Credentials object from a JSON description of it.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.from_json">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.Credentials-class.html">Credentials</a></code></b>:
+      <code><a href="oauth2client.client.Credentials-class.html#new_from_json">new_from_json</a></code>
+      </p>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS VARIABLES ==================== -->
+<a name="section-ClassVariables"></a>
+<table class="summary" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+  <td colspan="2" class="table-header">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Class Variables</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-ClassVariables"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.Credentials-class.html">Credentials</a></code></b>:
+      <code><a href="oauth2client.client.Credentials-class.html#NON_SERIALIZED_MEMBERS">NON_SERIALIZED_MEMBERS</a></code>
+      </p>
+    </td>
+  </tr>
+</table>
+<!-- ==================== PROPERTIES ==================== -->
+<a name="section-Properties"></a>
+<table class="summary" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+  <td colspan="2" class="table-header">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Properties</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-Properties"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+        <a href="oauth2client.client.OAuth2Credentials-class.html#access_token_expired" class="summary-name">access_token_expired</a><br />
+      True if the credential is expired or invalid.
+    </td>
+  </tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
+      <code>__class__</code>
+      </p>
+    </td>
+  </tr>
+</table>
+<!-- ==================== METHOD DETAILS ==================== -->
+<a name="section-MethodDetails"></a>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+  <td colspan="2" class="table-header">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Method Details</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-MethodDetails"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+</table>
+<a name="__init__"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">access_token</span>,
+        <span class="sig-arg">client_id</span>,
+        <span class="sig-arg">client_secret</span>,
+        <span class="sig-arg">refresh_token</span>,
+        <span class="sig-arg">token_expiry</span>,
+        <span class="sig-arg">token_uri</span>,
+        <span class="sig-arg">user_agent</span>,
+        <span class="sig-arg">id_token</span>=<span class="sig-default">None</span>)</span>
+    <br /><em class="fname">(Constructor)</em>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.__init__">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Create an instance of OAuth2Credentials.
+
+This constructor is not usually called by the user, instead
+OAuth2Credentials objects are instantiated by the OAuth2WebServerFlow.
+
+Args:
+  access_token: string, access token.
+  client_id: string, client identifier.
+  client_secret: string, client secret.
+  refresh_token: string, refresh token.
+  token_expiry: datetime, when the access_token expires.
+  token_uri: string, URI of token endpoint.
+  user_agent: string, The HTTP User-Agent to provide for this application.
+  id_token: object, The identity of the resource owner.
+
+Notes:
+  store: callable, A callable that when passed a Credential
+    will store the credential back to where it came from.
+    This is needed to store the latest access_token if it
+    has expired and been refreshed.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        object.__init__
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="authorize"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">authorize</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">http</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.authorize">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Authorize an httplib2.Http instance with these credentials.
+
+The modified http.request method will add authentication headers to each
+request and will refresh access_tokens when a 401 is received on a
+request. In addition the http.request method has a credentials property,
+http.request.credentials, which is the Credentials object that authorized
+it.
+
+Args:
+   http: An instance of httplib2.Http
+       or something that acts like it.
+
+Returns:
+   A modified instance of http that was passed in.
+
+Example:
+
+  h = httplib2.Http()
+  h = credentials.authorize(h)
+
+You can't create a new OAuth subclass of httplib2.Authenication
+because it never gets passed the absolute URI, which is needed for
+signing. So instead we have to overload 'request' with a closure
+that adds in the Authorization header and then calls the original
+version of 'request()'.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.Credentials-class.html#authorize">Credentials.authorize</a>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="refresh"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">refresh</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">http</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.refresh">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Forces a refresh of the access_token.
+
+Args:
+  http: httplib2.Http, an http object to be used to make the refresh
+    request.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.Credentials-class.html#refresh">Credentials.refresh</a>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="apply"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">apply</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">headers</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.apply">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Add the authorization to the headers.
+
+Args:
+  headers: dict, the headers to add the Authorization header to.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.Credentials-class.html#apply">Credentials.apply</a>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="to_json"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">to_json</span>(<span class="sig-arg">self</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.to_json">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Creating a JSON representation of an instance of Credentials.
+
+Returns:
+   string, a JSON representation of this instance, suitable to pass to
+   from_json().
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.Credentials-class.html#to_json">Credentials.to_json</a>
+        <dd><em class="note">(inherited documentation)</em></dd>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="from_json"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">from_json</span>(<span class="sig-arg">cls</span>,
+        <span class="sig-arg">s</span>)</span>
+    <br /><em class="fname">Class Method</em>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.from_json">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Instantiate a Credentials object from a JSON description of it. The JSON
+should have been produced by calling .to_json() on the object.
+
+Args:
+  data: dict, A deserialized JSON object.
+
+Returns:
+  An instance of a Credentials subclass.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.Credentials-class.html#from_json">Credentials.from_json</a>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="set_store"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">set_store</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">store</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials.set_store">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Set the Storage for the credential.
+
+Args:
+  store: Storage, an implementation of Stroage object.
+    This is needed to store the latest access_token if it
+    has expired and been refreshed.  This implementation uses
+    locking to check for updates before updating the
+    access_token.
+
+</pre>
+  <dl class="fields">
+  </dl>
+</td></tr></table>
+</div>
+<a name="_refresh"></a>
+<div class="private">
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">_refresh</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">http_request</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._refresh">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Refreshes the access_token.
+
+This method first checks by reading the Storage object if available.
+If a refresh is still needed, it holds the Storage lock until the
+refresh is completed.
+
+Args:
+  http_request: callable, a callable that matches the method signature of
+    httplib2.Http.request, used to make the refresh request.
+
+Raises:
+  AccessTokenRefreshError: When the refresh fails.
+
+</pre>
+  <dl class="fields">
+  </dl>
+</td></tr></table>
+</div>
+<a name="_do_refresh_request"></a>
+<div class="private">
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <table width="100%" cellpadding="0" cellspacing="0" border="0">
+  <tr valign="top"><td>
+  <h3 class="epydoc"><span class="sig"><span class="sig-name">_do_refresh_request</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">http_request</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#OAuth2Credentials._do_refresh_request">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Refresh the access_token using the refresh_token.
+
+Args:
+  http_request: callable, a callable that matches the method signature of
+    httplib2.Http.request, used to make the refresh request.
+
+Raises:
+  AccessTokenRefreshError: When the refresh fails.
+
+</pre>
+  <dl class="fields">
+  </dl>
+</td></tr></table>
+</div>
+<br />
+<!-- ==================== PROPERTY DETAILS ==================== -->
+<a name="section-PropertyDetails"></a>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+  <td colspan="2" class="table-header">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Property Details</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-PropertyDetails"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+</table>
+<a name="access_token_expired"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+       cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+  <h3 class="epydoc">access_token_expired</h3>
+  <pre class="literalblock">
+True if the credential is expired or invalid.
+
+If the token_expiry isn't set, we assume the token doesn't expire.
+
+</pre>
+  <dl class="fields">
+    <dt>Get Method:</dt>
+    <dd class="value"><span class="summary-sig"><i>unreachable</i>.access_token_expired(<span class="summary-sig-arg">self</span>)</span>
+        - True if the credential is expired or invalid.
+    </dd>
+  </dl>
+</td></tr></table>
+</div>
+<br />
+<!-- ==================== NAVIGATION BAR ==================== -->
+<table class="navbar" border="0" width="100%" cellpadding="0"
+       bgcolor="#a0c0ff" cellspacing="0">
+  <tr valign="middle">
+
+  <!-- Tree link -->
+      <th>&nbsp;&nbsp;&nbsp;<a
+        href="module-tree.html">Trees</a>&nbsp;&nbsp;&nbsp;</th>
+
+  <!-- Index link -->
+      <th>&nbsp;&nbsp;&nbsp;<a
+        href="identifier-index.html">Indices</a>&nbsp;&nbsp;&nbsp;</th>
+
+  <!-- Help link -->
+      <th>&nbsp;&nbsp;&nbsp;<a
+        href="help.html">Help</a>&nbsp;&nbsp;&nbsp;</th>
+
+      <th class="navbar" width="100%"></th>
+  </tr>
+</table>
+<table border="0" cellpadding="0" cellspacing="0" width="100%%">
+  <tr>
+    <td align="left" class="footer">
+    Generated by Epydoc 3.0.1 on Tue Jun  5 09:03:09 2012
+    </td>
+    <td align="right" class="footer">
+      <a target="mainFrame" href="http://epydoc.sourceforge.net"
+        >http://epydoc.sourceforge.net</a>
+    </td>
+  </tr>
+</table>
+
+<script type="text/javascript">
+  <!--
+  // Private objects are initially displayed (because if
+  // javascript is turned off then we want them to be
+  // visible); but by default, we want to hide them.  So hide
+  // them unless we have a cookie that says to show them.
+  checkCookie();
+  // -->
+</script>
+</body>
+</html>