docs: update generated docs (#981)

diff --git a/docs/dyn/books_v1.layers.html b/docs/dyn/books_v1.layers.html
index 2c734fa..cdfed78 100644
--- a/docs/dyn/books_v1.layers.html
+++ b/docs/dyn/books_v1.layers.html
@@ -85,14 +85,14 @@
 <p class="firstline">Returns the volumeAnnotations Resource.</p>
 
 <p class="toc_element">
-  <code><a href="#get">get(volumeId, summaryId, contentVersion=None, source=None)</a></code></p>
+  <code><a href="#get">get(volumeId, summaryId, contentVersion=None, source=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Gets the layer summary for a volume.</p>
 <p class="toc_element">
-  <code><a href="#list">list(volumeId, contentVersion=None, maxResults=None, pageToken=None, source=None)</a></code></p>
+  <code><a href="#list">list(volumeId, pageToken=None, contentVersion=None, source=None, maxResults=None, x__xgafv=None)</a></code></p>
 <p class="firstline">List the layer summaries for a volume.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="get">get(volumeId, summaryId, contentVersion=None, source=None)</code>
+    <code class="details" id="get">get(volumeId, summaryId, contentVersion=None, source=None, x__xgafv=None)</code>
   <pre>Gets the layer summary for a volume.
 
 Args:
@@ -100,65 +100,73 @@
   summaryId: string, The ID for the layer to get the summary for. (required)
   contentVersion: string, The content version for the requested volume.
   source: string, String to identify the originator of this request.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
 
 Returns:
   An object of the form:
 
     {
-    &quot;annotationCount&quot;: 42, # The number of annotations for this layer.
+    &quot;id&quot;: &quot;A String&quot;, # Unique id of this layer summary.
+    &quot;contentVersion&quot;: &quot;A String&quot;, # The content version this resource is for.
+    &quot;annotationsDataLink&quot;: &quot;A String&quot;, # Link to get data for this annotation.
+    &quot;kind&quot;: &quot;A String&quot;, # Resource Type
     &quot;annotationTypes&quot;: [ # The list of annotation types contained for this layer.
       &quot;A String&quot;,
     ],
-    &quot;annotationsDataLink&quot;: &quot;A String&quot;, # Link to get data for this annotation.
-    &quot;annotationsLink&quot;: &quot;A String&quot;, # The link to get the annotations for this layer.
-    &quot;contentVersion&quot;: &quot;A String&quot;, # The content version this resource is for.
-    &quot;dataCount&quot;: 42, # The number of data items for this layer.
-    &quot;id&quot;: &quot;A String&quot;, # Unique id of this layer summary.
-    &quot;kind&quot;: &quot;books#layersummary&quot;, # Resource Type
-    &quot;layerId&quot;: &quot;A String&quot;, # The layer id for this summary.
-    &quot;selfLink&quot;: &quot;A String&quot;, # URL to this resource.
     &quot;updated&quot;: &quot;A String&quot;, # Timestamp for the last time an item in this layer was updated. (RFC 3339 UTC date-time format).
-    &quot;volumeAnnotationsVersion&quot;: &quot;A String&quot;, # The current version of this layer&#x27;s volume annotations. Note that this version applies only to the data in the books.layers.volumeAnnotations.* responses. The actual annotation data is versioned separately.
+    &quot;layerId&quot;: &quot;A String&quot;, # The layer id for this summary.
+    &quot;dataCount&quot;: 42, # The number of data items for this layer.
     &quot;volumeId&quot;: &quot;A String&quot;, # The volume id this resource is for.
+    &quot;annotationCount&quot;: 42, # The number of annotations for this layer.
+    &quot;annotationsLink&quot;: &quot;A String&quot;, # The link to get the annotations for this layer.
+    &quot;selfLink&quot;: &quot;A String&quot;, # URL to this resource.
+    &quot;volumeAnnotationsVersion&quot;: &quot;A String&quot;, # The current version of this layer&#x27;s volume annotations. Note that this version applies only to the data in the books.layers.volumeAnnotations.* responses. The actual annotation data is versioned separately.
   }</pre>
 </div>
 
 <div class="method">
-    <code class="details" id="list">list(volumeId, contentVersion=None, maxResults=None, pageToken=None, source=None)</code>
+    <code class="details" id="list">list(volumeId, pageToken=None, contentVersion=None, source=None, maxResults=None, x__xgafv=None)</code>
   <pre>List the layer summaries for a volume.
 
 Args:
   volumeId: string, The volume to retrieve layers for. (required)
-  contentVersion: string, The content version for the requested volume.
-  maxResults: integer, Maximum number of results to return
   pageToken: string, The value of the nextToken from the previous page.
+  contentVersion: string, The content version for the requested volume.
   source: string, String to identify the originator of this request.
+  maxResults: integer, Maximum number of results to return
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
 
 Returns:
   An object of the form:
 
     {
+    &quot;kind&quot;: &quot;A String&quot;, # Resource type.
+    &quot;totalItems&quot;: 42, # The total number of layer summaries found.
     &quot;items&quot;: [ # A list of layer summary items.
       {
-        &quot;annotationCount&quot;: 42, # The number of annotations for this layer.
+        &quot;id&quot;: &quot;A String&quot;, # Unique id of this layer summary.
+        &quot;contentVersion&quot;: &quot;A String&quot;, # The content version this resource is for.
+        &quot;annotationsDataLink&quot;: &quot;A String&quot;, # Link to get data for this annotation.
+        &quot;kind&quot;: &quot;A String&quot;, # Resource Type
         &quot;annotationTypes&quot;: [ # The list of annotation types contained for this layer.
           &quot;A String&quot;,
         ],
-        &quot;annotationsDataLink&quot;: &quot;A String&quot;, # Link to get data for this annotation.
-        &quot;annotationsLink&quot;: &quot;A String&quot;, # The link to get the annotations for this layer.
-        &quot;contentVersion&quot;: &quot;A String&quot;, # The content version this resource is for.
-        &quot;dataCount&quot;: 42, # The number of data items for this layer.
-        &quot;id&quot;: &quot;A String&quot;, # Unique id of this layer summary.
-        &quot;kind&quot;: &quot;books#layersummary&quot;, # Resource Type
-        &quot;layerId&quot;: &quot;A String&quot;, # The layer id for this summary.
-        &quot;selfLink&quot;: &quot;A String&quot;, # URL to this resource.
         &quot;updated&quot;: &quot;A String&quot;, # Timestamp for the last time an item in this layer was updated. (RFC 3339 UTC date-time format).
-        &quot;volumeAnnotationsVersion&quot;: &quot;A String&quot;, # The current version of this layer&#x27;s volume annotations. Note that this version applies only to the data in the books.layers.volumeAnnotations.* responses. The actual annotation data is versioned separately.
+        &quot;layerId&quot;: &quot;A String&quot;, # The layer id for this summary.
+        &quot;dataCount&quot;: 42, # The number of data items for this layer.
         &quot;volumeId&quot;: &quot;A String&quot;, # The volume id this resource is for.
+        &quot;annotationCount&quot;: 42, # The number of annotations for this layer.
+        &quot;annotationsLink&quot;: &quot;A String&quot;, # The link to get the annotations for this layer.
+        &quot;selfLink&quot;: &quot;A String&quot;, # URL to this resource.
+        &quot;volumeAnnotationsVersion&quot;: &quot;A String&quot;, # The current version of this layer&#x27;s volume annotations. Note that this version applies only to the data in the books.layers.volumeAnnotations.* responses. The actual annotation data is versioned separately.
       },
     ],
-    &quot;kind&quot;: &quot;books#layersummaries&quot;, # Resource type.
-    &quot;totalItems&quot;: 42, # The total number of layer summaries found.
   }</pre>
 </div>