Regenerate docs. (#696)

diff --git a/docs/epy/toc-everything.html b/docs/epy/toc-everything.html
index 8ea32cb..1071ac4 100644
--- a/docs/epy/toc-everything.html
+++ b/docs/epy/toc-everything.html
@@ -70,15 +70,39 @@
      >googleapiclient.schema._SchemaToStruct</a><br />  </div>
   <h2 class="toc">All Functions</h2>
   <div class="private">
+    <a target="mainFrame" href="googleapiclient._auth-module.html#apply_credentials"
+     >googleapiclient._auth.apply_credentials</a><br />  </div>
+  <div class="private">
     <a target="mainFrame" href="googleapiclient._auth-module.html#authorized_http"
      >googleapiclient._auth.authorized_http</a><br />  </div>
   <div class="private">
     <a target="mainFrame" href="googleapiclient._auth-module.html#default_credentials"
      >googleapiclient._auth.default_credentials</a><br />  </div>
   <div class="private">
+    <a target="mainFrame" href="googleapiclient._auth-module.html#get_credentials_from_http"
+     >googleapiclient._auth.get_credentials_from_http</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._auth-module.html#is_valid"
+     >googleapiclient._auth.is_valid</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._auth-module.html#refresh_credentials"
+     >googleapiclient._auth.refresh_credentials</a><br />  </div>
+  <div class="private">
     <a target="mainFrame" href="googleapiclient._auth-module.html#with_scopes"
      >googleapiclient._auth.with_scopes</a><br />  </div>
   <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#_add_query_parameter"
+     >googleapiclient._helpers._add_query_parameter</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#parse_unique_urlencoded"
+     >googleapiclient._helpers.parse_unique_urlencoded</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#positional"
+     >googleapiclient._helpers.positional</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#update_query_params"
+     >googleapiclient._helpers.update_query_params</a><br />  </div>
+  <div class="private">
     <a target="mainFrame" href="googleapiclient.channel-module.html#_upper_header_keys"
      >googleapiclient.channel._upper_header_keys</a><br />  </div>
     <a target="mainFrame" href="googleapiclient.channel-module.html#new_webhook_channel"
@@ -160,6 +184,36 @@
   <div class="private">
     <a target="mainFrame" href="googleapiclient._auth-module.html#HAS_OAUTH2CLIENT"
      >googleapiclient._auth.HAS_OAUTH2CLIENT</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._auth-module.html#google_auth_httplib2"
+     >googleapiclient._auth.google_auth_httplib2</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#POSITIONAL_EXCEPTION"
+     >googleapiclient._helpers.POSITIONAL_EXCEPTION</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#POSITIONAL_IGNORE"
+     >googleapiclient._helpers.POSITIONAL_IGNORE</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#POSITIONAL_SET"
+     >googleapiclient._helpers.POSITIONAL_SET</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#POSITIONAL_WARNING"
+     >googleapiclient._helpers.POSITIONAL_WARNING</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#_IS_DIR_MESSAGE"
+     >googleapiclient._helpers._IS_DIR_MESSAGE</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#_MISSING_FILE_MESSAGE"
+     >googleapiclient._helpers._MISSING_FILE_MESSAGE</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#_SYM_LINK_MESSAGE"
+     >googleapiclient._helpers._SYM_LINK_MESSAGE</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#logger"
+     >googleapiclient._helpers.logger</a><br />  </div>
+  <div class="private">
+    <a target="mainFrame" href="googleapiclient._helpers-module.html#positional_parameters_enforcement"
+     >googleapiclient._helpers.positional_parameters_enforcement</a><br />  </div>
     <a target="mainFrame" href="googleapiclient.channel-module.html#CHANNEL_PARAMS"
      >googleapiclient.channel.CHANNEL_PARAMS</a><br />    <a target="mainFrame" href="googleapiclient.channel-module.html#EPOCH"
      >googleapiclient.channel.EPOCH</a><br />    <a target="mainFrame" href="googleapiclient.channel-module.html#X_GOOG_CHANNEL_ID"
@@ -229,6 +283,9 @@
      >googleapiclient.http.DEFAULT_HTTP_TIMEOUT_SEC</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#LOGGER"
      >googleapiclient.http.LOGGER</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#MAX_URI_LENGTH"
      >googleapiclient.http.MAX_URI_LENGTH</a><br />  <div class="private">
+    <a target="mainFrame" href="googleapiclient.http-module.html#_LEGACY_BATCH_URI"
+     >googleapiclient.http._LEGACY_BATCH_URI</a><br />  </div>
+  <div class="private">
     <a target="mainFrame" href="googleapiclient.http-module.html#_TOO_MANY_REQUESTS"
      >googleapiclient.http._TOO_MANY_REQUESTS</a><br />  </div>
   <div class="private">