chore: regens API reference docs (#889)

diff --git a/docs/dyn/classroom_v1.courses.teachers.html b/docs/dyn/classroom_v1.courses.teachers.html
index 742b457..6e9c3dd 100644
--- a/docs/dyn/classroom_v1.courses.teachers.html
+++ b/docs/dyn/classroom_v1.courses.teachers.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.teachers.html">teachers</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 teacher of a course.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(courseId, userId, x__xgafv=None)</a></code></p>
@@ -91,7 +91,7 @@
 <p class="firstline">Retrieves the next page of results.</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 teacher of a course.
 
 This method returns the following error codes:
@@ -112,7 +112,7 @@
   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:
 
 { # Teacher of a course.
@@ -144,7 +144,7 @@
           # Read-only.
       "verifiedTeacher": True or False, # Represents whether a G Suite for Education user's domain administrator has
           # explicitly verified them as being a teacher. If the user is not a member of
-          # a G Suite for Education domain, than this field will always be false.
+          # a G Suite for Education domain, than this field is always false.
           #
           # Read-only
       "id": "A String", # Identifier of the user.
@@ -205,7 +205,7 @@
             # Read-only.
         "verifiedTeacher": True or False, # Represents whether a G Suite for Education user's domain administrator has
             # explicitly verified them as being a teacher. If the user is not a member of
-            # a G Suite for Education domain, than this field will always be false.
+            # a G Suite for Education domain, than this field is always false.
             #
             # Read-only
         "id": "A String", # Identifier of the user.
@@ -331,7 +331,7 @@
             # Read-only.
         "verifiedTeacher": True or False, # Represents whether a G Suite for Education user's domain administrator has
             # explicitly verified them as being a teacher. If the user is not a member of
-            # a G Suite for Education domain, than this field will always be false.
+            # a G Suite for Education domain, than this field is always false.
             #
             # Read-only
         "id": "A String", # Identifier of the user.
@@ -421,7 +421,7 @@
                 # Read-only.
             "verifiedTeacher": True or False, # Represents whether a G Suite for Education user's domain administrator has
                 # explicitly verified them as being a teacher. If the user is not a member of
-                # a G Suite for Education domain, than this field will always be false.
+                # a G Suite for Education domain, than this field is always false.
                 #
                 # Read-only
             "id": "A String", # Identifier of the user.