chore: regens API reference docs (#889)

diff --git a/docs/dyn/drive_v3.replies.html b/docs/dyn/drive_v3.replies.html
index c70344b..65ecd0c 100644
--- a/docs/dyn/drive_v3.replies.html
+++ b/docs/dyn/drive_v3.replies.html
@@ -75,7 +75,7 @@
 <h1><a href="drive_v3.html">Drive API</a> . <a href="drive_v3.replies.html">replies</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#create">create(fileId, commentId, body)</a></code></p>
+  <code><a href="#create">create(fileId, commentId, body=None)</a></code></p>
 <p class="firstline">Creates a new reply to a comment.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(fileId, commentId, replyId)</a></code></p>
@@ -90,23 +90,23 @@
   <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="#update">update(fileId, commentId, replyId, body)</a></code></p>
+  <code><a href="#update">update(fileId, commentId, replyId, body=None)</a></code></p>
 <p class="firstline">Updates a reply with patch semantics.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="create">create(fileId, commentId, body)</code>
+    <code class="details" id="create">create(fileId, commentId, body=None)</code>
   <pre>Creates a new reply to a comment.
 
 Args:
   fileId: string, The ID of the file. (required)
   commentId: string, The ID of the comment. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A reply to a comment on a file.
   "kind": "drive#reply", # Identifies what kind of resource this is. Value: the fixed string "drive#reply".
   "modifiedTime": "A String", # The last time the reply was modified (RFC 3339 date-time).
-  "author": { # Information about a Drive user. # The user who created the reply.
+  "author": { # Information about a Drive user. # The author of the reply. The author's email address and permission ID will not be populated.
     "me": True or False, # Whether this user is the requesting user.
     "kind": "drive#user", # Identifies what kind of resource this is. Value: the fixed string "drive#user".
     "displayName": "A String", # A plain text displayable name for this user.
@@ -131,7 +131,7 @@
     { # A reply to a comment on a file.
     "kind": "drive#reply", # Identifies what kind of resource this is. Value: the fixed string "drive#reply".
     "modifiedTime": "A String", # The last time the reply was modified (RFC 3339 date-time).
-    "author": { # Information about a Drive user. # The user who created the reply.
+    "author": { # Information about a Drive user. # The author of the reply. The author's email address and permission ID will not be populated.
       "me": True or False, # Whether this user is the requesting user.
       "kind": "drive#user", # Identifies what kind of resource this is. Value: the fixed string "drive#user".
       "displayName": "A String", # A plain text displayable name for this user.
@@ -177,7 +177,7 @@
     { # A reply to a comment on a file.
     "kind": "drive#reply", # Identifies what kind of resource this is. Value: the fixed string "drive#reply".
     "modifiedTime": "A String", # The last time the reply was modified (RFC 3339 date-time).
-    "author": { # Information about a Drive user. # The user who created the reply.
+    "author": { # Information about a Drive user. # The author of the reply. The author's email address and permission ID will not be populated.
       "me": True or False, # Whether this user is the requesting user.
       "kind": "drive#user", # Identifies what kind of resource this is. Value: the fixed string "drive#user".
       "displayName": "A String", # A plain text displayable name for this user.
@@ -217,7 +217,7 @@
       { # A reply to a comment on a file.
         "kind": "drive#reply", # Identifies what kind of resource this is. Value: the fixed string "drive#reply".
         "modifiedTime": "A String", # The last time the reply was modified (RFC 3339 date-time).
-        "author": { # Information about a Drive user. # The user who created the reply.
+        "author": { # Information about a Drive user. # The author of the reply. The author's email address and permission ID will not be populated.
           "me": True or False, # Whether this user is the requesting user.
           "kind": "drive#user", # Identifies what kind of resource this is. Value: the fixed string "drive#user".
           "displayName": "A String", # A plain text displayable name for this user.
@@ -253,20 +253,20 @@
 </div>
 
 <div class="method">
-    <code class="details" id="update">update(fileId, commentId, replyId, body)</code>
+    <code class="details" id="update">update(fileId, commentId, replyId, body=None)</code>
   <pre>Updates a reply with patch semantics.
 
 Args:
   fileId: string, The ID of the file. (required)
   commentId: string, The ID of the comment. (required)
   replyId: string, The ID of the reply. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A reply to a comment on a file.
   "kind": "drive#reply", # Identifies what kind of resource this is. Value: the fixed string "drive#reply".
   "modifiedTime": "A String", # The last time the reply was modified (RFC 3339 date-time).
-  "author": { # Information about a Drive user. # The user who created the reply.
+  "author": { # Information about a Drive user. # The author of the reply. The author's email address and permission ID will not be populated.
     "me": True or False, # Whether this user is the requesting user.
     "kind": "drive#user", # Identifies what kind of resource this is. Value: the fixed string "drive#user".
     "displayName": "A String", # A plain text displayable name for this user.
@@ -291,7 +291,7 @@
     { # A reply to a comment on a file.
     "kind": "drive#reply", # Identifies what kind of resource this is. Value: the fixed string "drive#reply".
     "modifiedTime": "A String", # The last time the reply was modified (RFC 3339 date-time).
-    "author": { # Information about a Drive user. # The user who created the reply.
+    "author": { # Information about a Drive user. # The author of the reply. The author's email address and permission ID will not be populated.
       "me": True or False, # Whether this user is the requesting user.
       "kind": "drive#user", # Identifies what kind of resource this is. Value: the fixed string "drive#user".
       "displayName": "A String", # A plain text displayable name for this user.