chore: regens API reference docs (#889)

diff --git a/docs/dyn/cloudsearch_v1.query.sources.html b/docs/dyn/cloudsearch_v1.query.sources.html
index 0c9f56c..579499c 100644
--- a/docs/dyn/cloudsearch_v1.query.sources.html
+++ b/docs/dyn/cloudsearch_v1.query.sources.html
@@ -85,25 +85,39 @@
     <code class="details" id="list">list(requestOptions_timeZone=None, pageToken=None, requestOptions_debugOptions_enableDebugging=None, requestOptions_searchApplicationId=None, requestOptions_languageCode=None, x__xgafv=None)</code>
   <pre>Returns list of sources that user can use for Search and Suggest APIs.
 
+**Note:** This API requires a standard end user account to execute.
+A service account can't perform Query API requests directly; to use a
+service account to perform queries, set up [G Suite domain-wide delegation
+of
+authority](https://developers.google.com/cloud-search/docs/guides/delegation/).
+
 Args:
   requestOptions_timeZone: string, Current user's time zone id, such as "America/Los_Angeles" or
 "Australia/Sydney". These IDs are defined by
 [Unicode Common Locale Data Repository (CLDR)](http://cldr.unicode.org/)
 project, and currently available in the file
-[timezone.xml](http://unicode.org/repos/cldr/trunk/common/bcp47/timezone.xml)
+[timezone.xml](http://unicode.org/repos/cldr/trunk/common/bcp47/timezone.xml).
+This field is used to correctly interpret date and time queries.
+If this field is not specified, the default time zone (UTC) is used.
   pageToken: string, Number of sources to return in the response.
   requestOptions_debugOptions_enableDebugging: boolean, If you are asked by Google to help with debugging, set this field.
 Otherwise, ignore this field.
-  requestOptions_searchApplicationId: string, Id of the application created using SearchApplicationsService.
+  requestOptions_searchApplicationId: string, The ID generated when you create a search application using the
+[admin console](https://support.google.com/a/answer/9043922).
   requestOptions_languageCode: string, The BCP-47 language code, such as "en-US" or "sr-Latn".
 For more information, see
 http://www.unicode.org/reports/tr35/#Unicode_locale_identifier.
 For translations.
 
+Set this field using the language set in browser or for the page. In the
+event that the user's language preference is known, set this field to the
+known user language.
+
 When specified, the documents in search results are biased towards the
 specified language.
-Suggest API does not use this parameter. It autocompletes only based on
-characters in the query.
+
+The suggest API does not use this parameter. Instead, suggest autocompletes
+only based on characters in the query.
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -121,9 +135,6 @@
           "name": "A String", # Source name for content indexed by the
               # Indexing API.
         },
-        "shortName": "A String", # A short name or alias for the source.  This value can be used with the
-            # 'source' operator.
-        "displayName": "A String", # Display name of the data source.
         "operators": [ # List of all operators applicable for this source.
           { # The definition of a operator that can be used in a Search/Suggest request.
             "enumValues": [ # Potential list of values for the opeatror field. This field is only filled
@@ -139,12 +150,17 @@
                 # the less-than operator.
             "isRepeatable": True or False, # Indicates if multiple values can be set for this property.
             "isFacetable": True or False, # Can this operator be used to get facets.
+            "isSuggestable": True or False, # Can get suggestions for this field.
             "type": "A String", # Type of the operator.
             "operatorName": "A String", # The name of the operator.
             "isSortable": True or False, # Can this operator be used to sort results.
-            "isSuggestable": True or False, # Can get suggestions for this field.
+            "objectType": "A String", # Name of the object corresponding to the operator. This field is only filled
+                # for schema-specific operators, and is unset for common operators.
           },
         ],
+        "displayName": "A String", # Display name of the data source.
+        "shortName": "A String", # A short name or alias for the source.  This value can be used with the
+            # 'source' operator.
       },
     ],
   }</pre>