chore: regens API reference docs (#889)

diff --git a/docs/dyn/safebrowsing_v4.threatHits.html b/docs/dyn/safebrowsing_v4.threatHits.html
index 0022a29..3f4c225 100644
--- a/docs/dyn/safebrowsing_v4.threatHits.html
+++ b/docs/dyn/safebrowsing_v4.threatHits.html
@@ -75,24 +75,24 @@
 <h1><a href="safebrowsing_v4.html">Safe Browsing API</a> . <a href="safebrowsing_v4.threatHits.html">threatHits</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#create">create(body, x__xgafv=None)</a></code></p>
+  <code><a href="#create">create(body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Reports a Safe Browsing threat list hit to Google. Only projects with</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="create">create(body, x__xgafv=None)</code>
+    <code class="details" id="create">create(body=None, x__xgafv=None)</code>
   <pre>Reports a Safe Browsing threat list hit to Google. Only projects with
 TRUSTED_REPORTER visibility can use this method.
 
 Args:
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 {
     "threatType": "A String", # The threat type reported.
     "clientInfo": { # The client metadata associated with Safe Browsing API requests. # Client-reported identification.
-      "clientVersion": "A String", # The version of the client implementation.
       "clientId": "A String", # A client ID that (hopefully) uniquely identifies the client implementation
           # of the Safe Browsing API.
+      "clientVersion": "A String", # The version of the client implementation.
     },
     "userInfo": { # Details about the user that encountered the threat. # Details about the user that encountered the threat.
       "regionCode": "A String", # The UN M.49 region code associated with the user's location.