/services/audience_insights_service.proto

--- v13/services/audience_insights_service.proto    2023-06-07 19:38:57.000000000 +0000
+++ v14/services/audience_insights_service.proto    2023-06-07 19:39:02.000000000 +0000
@@ -386,8 +389,20 @@

 // Metadata associated with a Dynamic Lineup attribute.
 message DynamicLineupAttributeMetadata {
+  // A YouTube channel returned as an example of the content in a lineup.
+  message SampleChannel {
+    // A YouTube channel.
+    google.ads.googleads.v14.common.YouTubeChannelInfo youtube_channel = 1;
+
+    // The name of the sample channel.
+    string display_name = 2;
+
+    // Metadata for the sample channel.
+    YouTubeChannelAttributeMetadata youtube_channel_metadata = 3;
+  }
+
   // The national market associated with the lineup.
-  google.ads.googleads.v13.common.LocationInfo inventory_country = 1;
+  google.ads.googleads.v14.common.LocationInfo inventory_country = 1;

   // The median number of impressions per month on this lineup.
   optional int64 median_monthly_inventory = 2;
@@ -397,6 +412,9 @@

   // The upper end of a range containing the number of channels in the lineup.
   optional int64 channel_count_upper_bound = 4;
+
+  // Examples of channels that are included in the lineup.
+  repeated SampleChannel sample_channels = 5;
 }

 // Metadata associated with a Location attribute.