chore: regens API reference docs (#889)

diff --git a/docs/dyn/classroom_v1.courses.topics.html b/docs/dyn/classroom_v1.courses.topics.html
index 6bcd8d7..061d16d 100644
--- a/docs/dyn/classroom_v1.courses.topics.html
+++ b/docs/dyn/classroom_v1.courses.topics.html
@@ -75,7 +75,7 @@
 <h1><a href="classroom_v1.html">Google Classroom API</a> . <a href="classroom_v1.courses.html">courses</a> . <a href="classroom_v1.courses.topics.html">topics</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#create">create(courseId, body, x__xgafv=None)</a></code></p>
+  <code><a href="#create">create(courseId, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Creates a topic.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(courseId, id, x__xgafv=None)</a></code></p>
@@ -90,11 +90,11 @@
   <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
 <p class="firstline">Retrieves the next page of results.</p>
 <p class="toc_element">
-  <code><a href="#patch">patch(courseId, id, body, updateMask=None, x__xgafv=None)</a></code></p>
+  <code><a href="#patch">patch(courseId, id, body=None, updateMask=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Updates one or more fields of a topic.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="create">create(courseId, body, x__xgafv=None)</code>
+    <code class="details" id="create">create(courseId, body=None, x__xgafv=None)</code>
   <pre>Creates a topic.
 
 This method returns the following error codes:
@@ -109,7 +109,7 @@
   courseId: string, Identifier of the course.
 This identifier can be either the Classroom-assigned identifier or an
 alias. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # Topic created by a teacher for the course
@@ -123,8 +123,8 @@
         # 
         # Read-only.
     "name": "A String", # The name of the topic, generated by the user.
-        # Leading and trailing whitespaces, if any, will be trimmed. Also, multiple
-        # consecutive whitespaces will be collapsed into one inside the name. The
+        # Leading and trailing whitespaces, if any, are trimmed. Also, multiple
+        # consecutive whitespaces are collapsed into one inside the name. The
         # result must be a non-empty string. Topic names are case sensitive, and must
         # be no longer than 100 characters.
   }
@@ -148,8 +148,8 @@
           #
           # Read-only.
       "name": "A String", # The name of the topic, generated by the user.
-          # Leading and trailing whitespaces, if any, will be trimmed. Also, multiple
-          # consecutive whitespaces will be collapsed into one inside the name. The
+          # Leading and trailing whitespaces, if any, are trimmed. Also, multiple
+          # consecutive whitespaces are collapsed into one inside the name. The
           # result must be a non-empty string. Topic names are case sensitive, and must
           # be no longer than 100 characters.
     }</pre>
@@ -225,8 +225,8 @@
           #
           # Read-only.
       "name": "A String", # The name of the topic, generated by the user.
-          # Leading and trailing whitespaces, if any, will be trimmed. Also, multiple
-          # consecutive whitespaces will be collapsed into one inside the name. The
+          # Leading and trailing whitespaces, if any, are trimmed. Also, multiple
+          # consecutive whitespaces are collapsed into one inside the name. The
           # result must be a non-empty string. Topic names are case sensitive, and must
           # be no longer than 100 characters.
     }</pre>
@@ -267,8 +267,6 @@
   An object of the form:
 
     { # Response when listing topics.
-    "nextPageToken": "A String", # Token identifying the next page of results to return. If empty, no further
-        # results are available.
     "topic": [ # Topic items that match the request.
       { # Topic created by a teacher for the course
           "courseId": "A String", # Identifier of the course.
@@ -281,12 +279,14 @@
               #
               # Read-only.
           "name": "A String", # The name of the topic, generated by the user.
-              # Leading and trailing whitespaces, if any, will be trimmed. Also, multiple
-              # consecutive whitespaces will be collapsed into one inside the name. The
+              # Leading and trailing whitespaces, if any, are trimmed. Also, multiple
+              # consecutive whitespaces are collapsed into one inside the name. The
               # result must be a non-empty string. Topic names are case sensitive, and must
               # be no longer than 100 characters.
         },
     ],
+    "nextPageToken": "A String", # Token identifying the next page of results to return. If empty, no further
+        # results are available.
   }</pre>
 </div>
 
@@ -305,7 +305,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="patch">patch(courseId, id, body, updateMask=None, x__xgafv=None)</code>
+    <code class="details" id="patch">patch(courseId, id, body=None, updateMask=None, x__xgafv=None)</code>
   <pre>Updates one or more fields of a topic.
 
 This method returns the following error codes:
@@ -320,7 +320,7 @@
 This identifier can be either the Classroom-assigned identifier or an
 alias. (required)
   id: string, Identifier of the topic. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # Topic created by a teacher for the course
@@ -334,8 +334,8 @@
         # 
         # Read-only.
     "name": "A String", # The name of the topic, generated by the user.
-        # Leading and trailing whitespaces, if any, will be trimmed. Also, multiple
-        # consecutive whitespaces will be collapsed into one inside the name. The
+        # Leading and trailing whitespaces, if any, are trimmed. Also, multiple
+        # consecutive whitespaces are collapsed into one inside the name. The
         # result must be a non-empty string. Topic names are case sensitive, and must
         # be no longer than 100 characters.
   }
@@ -345,7 +345,7 @@
 fields are specified. If a field supports empty values, it can be cleared
 by specifying it in the update mask and not in the Topic object. If a
 field that does not support empty values is included in the update mask and
-not set in the Topic object, an `INVALID_ARGUMENT` error will be
+not set in the Topic object, an `INVALID_ARGUMENT` error is
 returned.
 
 The following fields may be specified:
@@ -370,8 +370,8 @@
           #
           # Read-only.
       "name": "A String", # The name of the topic, generated by the user.
-          # Leading and trailing whitespaces, if any, will be trimmed. Also, multiple
-          # consecutive whitespaces will be collapsed into one inside the name. The
+          # Leading and trailing whitespaces, if any, are trimmed. Also, multiple
+          # consecutive whitespaces are collapsed into one inside the name. The
           # result must be a non-empty string. Topic names are case sensitive, and must
           # be no longer than 100 characters.
     }</pre>