googleapis
diff --git a/‎packages/google-cloud-retail/protos/google/cloud/retail/v2alpha/search_service.proto‎
Lines changed: 7 additions & 4 deletions b/‎packages/google-cloud-retail/protos/google/cloud/retail/v2alpha/search_service.proto‎
Lines changed: 7 additions & 4 deletions
@@ -431,9 +431,9 @@ message SearchRequest {
     // [Condition.DISABLED][google.cloud.retail.v2alpha.SearchRequest.QueryExpansionSpec.Condition.DISABLED].
     Condition condition = 1;
 
-    // Whether to pin unexpanded results. If this field is set to true,
-    // unexpanded products are always at the top of the search results, followed
-    // by the expanded results.
+    // Whether to pin unexpanded results. The default value is false. If this
+    // field is set to true, unexpanded products are always at the top of the
+    // search results, followed by the expanded results.
     bool pin_unexpanded_results = 2;
   }
 
@@ -832,6 +832,9 @@ message SearchRequest {
   // INVALID_ARGUMENT error is returned.
   repeated string variant_rollup_keys = 17;
 
+  // Optional. An ID for the experiment group this search belongs to.
+  string experiment_id = 18 [(google.api.field_behavior) = OPTIONAL];
+
   // The categories associated with a category page. Must be set for category
   // navigation queries to achieve good search quality. The format should be
   // the same as
@@ -927,7 +930,7 @@ message SearchRequest {
   // search results.
   // * Populate at most 100 key-value pairs per query.
   // * Only supports string keys and repeated string values.
-  // * Duplcate keys are not allowed within a single query.
+  // * Duplicate keys are not allowed within a single query.
   //
   // Example:
   //    user_attributes: [