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+<?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.Credentials</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;Credentials
+      </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.Credentials-class.html"
+            target="_top">no&nbsp;frames</a>]</span></td></tr>
+      </table>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS DESCRIPTION ==================== -->
+<h1 class="epydoc">Class Credentials</h1><p class="nomargin-top"><span class="codelink"><a href="oauth2client.client-pysrc.html#Credentials">source&nbsp;code</a></span></p>
+<center>
+<center>  <map id="uml_class_diagram_for_oauth2cl_14" name="uml_class_diagram_for_oauth2cl_14">
+<area shape="rect" href="oauth2client.client.Credentials-class.html#NON_SERIALIZED_MEMBERS" title="oauth2client.client.Credentials.NON_SERIALIZED_MEMBERS" alt="" coords="243,28,432,47"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#authorize" title="Take an httplib2.Http instance (or equivalent) and authorizes it for the set of credentials, usually by replacing http.request() with a method that adds in the appropriate headers and then delegates to the original Http.request() method." alt="" coords="243,49,432,68"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#refresh" title="Forces a refresh of the access_token." alt="" coords="243,68,432,87"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#apply" title="Add the authorization to the headers." alt="" coords="243,87,432,105"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#to_json" title="Creating a JSON representation of an instance of Credentials." alt="" coords="243,105,432,124"/>
+<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="243,124,432,143"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html#from_json" title="Instantiate a Credentials object from a JSON description of it." alt="" coords="243,143,432,161"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html" title="Base class for all Credentials objects." alt="" coords="241,11,433,163"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html" title="Credentials object for OAuth 2.0." alt="" coords="276,192,399,219"/>
+<area shape="rect" href="oauth2client.client.AssertionCredentials-class.html" title="Abstract Credentials object used for OAuth 2.0 assertion grants." alt="" coords="173,248,307,275"/>
+<area shape="rect" href="oauth2client.client.AccessTokenCredentials-class.html" title="Credentials object for OAuth 2.0." alt="" coords="357,248,515,275"/>
+<area shape="rect" href="oauth2client.client.SignedJwtAssertionCredentials-class.html" title="Credentials object used for OAuth 2.0 Signed JWT assertion grants." alt="" coords="16,304,208,331"/>
+<area shape="rect" href="oauth2client.appengine.AppAssertionCredentials-class.html" title="Credentials object for App Engine Assertion Grants" alt="" coords="259,304,480,331"/>
+</map>
+  <img src="uml_class_diagram_for_oauth2cl_14.gif" alt='' usemap="#uml_class_diagram_for_oauth2cl_14" ismap="ismap" class="graph-without-title" />
+</center>
+</center>
+<hr />
+<pre class="literalblock">
+Base class for all Credentials objects.
+
+Subclasses must define an authorize() method that applies the credentials to
+an HTTP transport.
+
+Subclasses must also specify a classmethod named 'from_json' that takes a JSON
+string as input and returns an instaniated Credentials object.
+
+</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 name="authorize"></a><span class="summary-sig-name">authorize</span>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">http</span>)</span><br />
+      Take an httplib2.Http instance (or equivalent) and
+authorizes it for the set of credentials, usually by
+replacing http.request() with a method that adds in
+the appropriate headers and then delegates to the original
+Http.request() method.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#Credentials.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.Credentials-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#Credentials.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.Credentials-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#Credentials.apply">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.Credentials-class.html#_to_json" class="summary-sig-name" onclick="show_private();">_to_json</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">strip</span>)</span><br />
+      Utility function for creating a JSON representation of an instance of Credentials.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#Credentials._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.Credentials-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#Credentials.to_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>object</code></b>:
+      <code>__delattr__</code>,
+      <code>__format__</code>,
+      <code>__getattribute__</code>,
+      <code>__hash__</code>,
+      <code>__init__</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.Credentials-class.html#new_from_json" class="summary-sig-name">new_from_json</a>(<span class="summary-sig-arg">cls</span>,
+        <span class="summary-sig-arg">s</span>)</span><br />
+      Utility class method to instantiate a Credentials subclass from a JSON
+representation produced by to_json().</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.client-pysrc.html#Credentials.new_from_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.Credentials-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#Credentials.from_json">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </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 width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+        <a name="NON_SERIALIZED_MEMBERS"></a><span class="summary-name">NON_SERIALIZED_MEMBERS</span> = <code title="['store']"><code class="variable-group">[</code><code class="variable-quote">'</code><code class="variable-string">store</code><code class="variable-quote">'</code><code class="variable-group">]</code></code>
+    </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 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="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#Credentials.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">
+  </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#Credentials.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">
+  </dl>
+</td></tr></table>
+</div>
+<a name="_to_json"></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">_to_json</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">strip</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.client-pysrc.html#Credentials._to_json">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Utility function for creating a JSON representation of an instance of Credentials.
+
+Args:
+  strip: array, An array of names of members to not include in the JSON.
+
+Returns:
+   string, a JSON representation of this instance, suitable to pass to
+   from_json().
+
+</pre>
+  <dl class="fields">
+  </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#Credentials.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">
+  </dl>
+</td></tr></table>
+</div>
+<a name="new_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">new_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#Credentials.new_from_json">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Utility class method to instantiate a Credentials subclass from a JSON
+representation produced by to_json().
+
+Args:
+  s: string, JSON from to_json().
+
+Returns:
+  An instance of the subclass of Credentials that was serialized with
+  to_json().
+
+</pre>
+  <dl class="fields">
+  </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#Credentials.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">
+  </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 -->
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