chore: regens API reference docs (#889)

diff --git a/docs/dyn/sqladmin_v1beta4.flags.html b/docs/dyn/sqladmin_v1beta4.flags.html
index 592d9b8..2e01143 100644
--- a/docs/dyn/sqladmin_v1beta4.flags.html
+++ b/docs/dyn/sqladmin_v1beta4.flags.html
@@ -75,15 +75,20 @@
 <h1><a href="sqladmin_v1beta4.html">Cloud SQL Admin API</a> . <a href="sqladmin_v1beta4.flags.html">flags</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#list">list(databaseVersion=None)</a></code></p>
+  <code><a href="#list">list(x__xgafv=None, databaseVersion=None)</a></code></p>
 <p class="firstline">List all available database flags for Cloud SQL instances.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="list">list(databaseVersion=None)</code>
+    <code class="details" id="list">list(x__xgafv=None, databaseVersion=None)</code>
   <pre>List all available database flags for Cloud SQL instances.
 
 Args:
-  databaseVersion: string, Database type and version you want to retrieve flags for. By default, this method returns flags for all database types and versions.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+  databaseVersion: string, Database type and version you want to retrieve flags for. By default, this
+method returns flags for all database types and versions.
 
 Returns:
   An object of the form:
@@ -91,22 +96,34 @@
     { # Flags list response.
     "items": [ # List of flags.
       { # A flag resource.
-        "inBeta": True or False, # True if the flag is only released in Beta.
-        "kind": "sql#flag", # This is always sql#flag.
-        "name": "A String", # This is the name of the flag. Flag names always use underscores, not hyphens, e.g. max_allowed_packet
-        "allowedStringValues": [ # For STRING flags, a list of strings that the value can be set to.
+        "inBeta": True or False, # Whether or not the flag is considered in beta.
+        "kind": "A String", # This is always &lt;code&gt;sql#flag&lt;/code&gt;.
+        "name": "A String", # This is the name of the flag. Flag names always use underscores, not
+            # hyphens, e.g. &lt;code&gt;max_allowed_packet&lt;/code&gt;
+        "allowedStringValues": [ # For &lt;code&gt;STRING&lt;/code&gt; flags, a list of strings that the value can be set
+            # to.
           "A String",
         ],
-        "requiresRestart": True or False, # Indicates whether changing this flag will trigger a database restart. Only applicable to Second Generation instances.
-        "appliesTo": [ # The database version this flag applies to. Can be MYSQL_5_5, MYSQL_5_6, or MYSQL_5_7. MYSQL_5_7 is applicable only to Second Generation instances.
+        "requiresRestart": True or False, # Indicates whether changing this flag will trigger a database restart. Only
+            # applicable to Second Generation instances.
+        "appliesTo": [ # The database version this flag applies to. Can be &lt;code&gt;MYSQL_5_5&lt;/code&gt;,
+            # &lt;code&gt;MYSQL_5_6&lt;/code&gt;, or &lt;code&gt;MYSQL_5_7&lt;/code&gt;. &lt;code&gt;MYSQL_5_7&lt;/code&gt;
+            # is applicable only to Second Generation instances.
           "A String",
         ],
-        "maxValue": "A String", # For INTEGER flags, the maximum allowed value.
-        "minValue": "A String", # For INTEGER flags, the minimum allowed value.
-        "type": "A String", # The type of the flag. Flags are typed to being BOOLEAN, STRING, INTEGER or NONE. NONE is used for flags which do not take a value, such as skip_grant_tables.
+        "maxValue": "A String", # For &lt;code&gt;INTEGER&lt;/code&gt; flags, the maximum allowed value.
+        "minValue": "A String", # For &lt;code&gt;INTEGER&lt;/code&gt; flags, the minimum allowed value.
+        "type": "A String", # The type of the flag. Flags are typed to being &lt;code&gt;BOOLEAN&lt;/code&gt;,
+            # &lt;code&gt;STRING&lt;/code&gt;, &lt;code&gt;INTEGER&lt;/code&gt; or &lt;code&gt;NONE&lt;/code&gt;.
+            # &lt;code&gt;NONE&lt;/code&gt; is used for flags which do not take a value, such as
+            # &lt;code&gt;skip_grant_tables&lt;/code&gt;.
+        "allowedIntValues": [ # Use this field if only certain integers are accepted. Can be combined
+            # with min_value and max_value to add additional values.
+          "A String",
+        ],
       },
     ],
-    "kind": "sql#flagsList", # This is always sql#flagsList.
+    "kind": "A String", # This is always &lt;code&gt;sql#flagsList&lt;/code&gt;.
   }</pre>
 </div>