chore: regens API reference docs (#889)

diff --git a/docs/dyn/content_v2.datafeedstatuses.html b/docs/dyn/content_v2.datafeedstatuses.html
index dfb7023..28cb7ea 100644
--- a/docs/dyn/content_v2.datafeedstatuses.html
+++ b/docs/dyn/content_v2.datafeedstatuses.html
@@ -75,7 +75,7 @@
 <h1><a href="content_v2.html">Content API for Shopping</a> . <a href="content_v2.datafeedstatuses.html">datafeedstatuses</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#custombatch">custombatch(body)</a></code></p>
+  <code><a href="#custombatch">custombatch(body=None)</a></code></p>
 <p class="firstline">Gets multiple Merchant Center datafeed statuses in a single request.</p>
 <p class="toc_element">
   <code><a href="#get">get(merchantId, datafeedId, language=None, country=None)</a></code></p>
@@ -88,11 +88,11 @@
 <p class="firstline">Retrieves the next page of results.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="custombatch">custombatch(body)</code>
+    <code class="details" id="custombatch">custombatch(body=None)</code>
   <pre>Gets multiple Merchant Center datafeed statuses in a single request.
 
 Args:
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 {
@@ -103,7 +103,10 @@
         "merchantId": "A String", # The ID of the managing account.
         "batchId": 42, # An entry ID, unique within the batch request.
         "datafeedId": "A String", # The ID of the data feed to get.
-        "method": "A String",
+        "method": "A String", # The method of the batch entry.
+            #
+            # Acceptable values are:
+            # - "`get`"
       },
     ],
   }
@@ -118,8 +121,8 @@
       { # A batch entry encoding a single non-batch datafeedstatuses response.
         "batchId": 42, # The ID of the request entry this entry responds to.
         "errors": { # A list of errors returned by a failed batch entry. # A list of errors defined if and only if the request failed.
-          "message": "A String", # The message of the first error in errors.
-          "code": 42, # The HTTP status of the first error in errors.
+          "message": "A String", # The message of the first error in `errors`.
+          "code": 42, # The HTTP status of the first error in `errors`.
           "errors": [ # A list of errors.
             { # An error returned by the API.
               "reason": "A String", # The error code.
@@ -129,7 +132,7 @@
           ],
         },
         "datafeedStatus": { # The status of a datafeed, i.e., the result of the last retrieval of the datafeed computed asynchronously when the feed processing is finished. # The requested data feed status. Defined if and only if the request was successful.
-          "kind": "content#datafeedStatus", # Identifies what kind of resource this is. Value: the fixed string "content#datafeedStatus".
+          "kind": "content#datafeedStatus", # Identifies what kind of resource this is. Value: the fixed string "`content#datafeedStatus`"
           "errors": [ # The list of errors occurring in the feed.
             { # An error occurring in the feed, like "invalid price".
               "count": "A String", # The number of occurrences of the error in the feed.
@@ -146,6 +149,12 @@
           ],
           "language": "A String", # The two-letter ISO 639-1 language for which the status is reported.
           "processingStatus": "A String", # The processing status of the feed.
+              #
+              # Acceptable values are:
+              # - "`"`failure`": The feed could not be processed or all items had errors.`"
+              # - "`in progress`": The feed is being processed.
+              # - "`none`": The feed has not yet been processed. For example, a feed that has never been uploaded will have this processing status.
+              # - "`success`": The feed was processed successfully, though some items might have had errors.
           "itemsTotal": "A String", # The number of items in the feed that were processed.
           "country": "A String", # The country for which the status is reported, represented as a  CLDR territory code.
           "warnings": [ # The list of errors occurring in the feed.
@@ -185,7 +194,7 @@
   An object of the form:
 
     { # The status of a datafeed, i.e., the result of the last retrieval of the datafeed computed asynchronously when the feed processing is finished.
-    "kind": "content#datafeedStatus", # Identifies what kind of resource this is. Value: the fixed string "content#datafeedStatus".
+    "kind": "content#datafeedStatus", # Identifies what kind of resource this is. Value: the fixed string "`content#datafeedStatus`"
     "errors": [ # The list of errors occurring in the feed.
       { # An error occurring in the feed, like "invalid price".
         "count": "A String", # The number of occurrences of the error in the feed.
@@ -202,6 +211,12 @@
     ],
     "language": "A String", # The two-letter ISO 639-1 language for which the status is reported.
     "processingStatus": "A String", # The processing status of the feed.
+        #
+        # Acceptable values are:
+        # - "`"`failure`": The feed could not be processed or all items had errors.`"
+        # - "`in progress`": The feed is being processed.
+        # - "`none`": The feed has not yet been processed. For example, a feed that has never been uploaded will have this processing status.
+        # - "`success`": The feed was processed successfully, though some items might have had errors.
     "itemsTotal": "A String", # The number of items in the feed that were processed.
     "country": "A String", # The country for which the status is reported, represented as a  CLDR territory code.
     "warnings": [ # The list of errors occurring in the feed.
@@ -241,7 +256,7 @@
     "kind": "content#datafeedstatusesListResponse", # Identifies what kind of resource this is. Value: the fixed string "content#datafeedstatusesListResponse".
     "resources": [
       { # The status of a datafeed, i.e., the result of the last retrieval of the datafeed computed asynchronously when the feed processing is finished.
-        "kind": "content#datafeedStatus", # Identifies what kind of resource this is. Value: the fixed string "content#datafeedStatus".
+        "kind": "content#datafeedStatus", # Identifies what kind of resource this is. Value: the fixed string "`content#datafeedStatus`"
         "errors": [ # The list of errors occurring in the feed.
           { # An error occurring in the feed, like "invalid price".
             "count": "A String", # The number of occurrences of the error in the feed.
@@ -258,6 +273,12 @@
         ],
         "language": "A String", # The two-letter ISO 639-1 language for which the status is reported.
         "processingStatus": "A String", # The processing status of the feed.
+            #
+            # Acceptable values are:
+            # - "`"`failure`": The feed could not be processed or all items had errors.`"
+            # - "`in progress`": The feed is being processed.
+            # - "`none`": The feed has not yet been processed. For example, a feed that has never been uploaded will have this processing status.
+            # - "`success`": The feed was processed successfully, though some items might have had errors.
         "itemsTotal": "A String", # The number of items in the feed that were processed.
         "country": "A String", # The country for which the status is reported, represented as a  CLDR territory code.
         "warnings": [ # The list of errors occurring in the feed.