Metrics for a given breakdown.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/services/benchmarks_service.proto)

| Fields ||
|---|---|
| ## `average_benchmarks_metrics` | `https://developers.google.com/google-ads/api/reference/rpc/v26/services.Metrics` Metrics for the selected benchmarks source. Rate metrics for the benchmarks source are only returned when the request `date_range` is a subset of `supported_dates_for_all_metrics` returned by `https://developers.google.com/google-ads/api/reference/rpc/v26/BenchmarksService/ListBenchmarksAvailableDates` due to limited availability. |
| ## `breakdown_key` | `https://developers.google.com/google-ads/api/reference/rpc/v26/BreakdownKey` Dimensions by which the breakdown metrics are grouped by. |
| ## `customer_metrics` | `https://developers.google.com/google-ads/api/reference/rpc/v26/CustomerMetrics` Metrics representing the customer's Ad performance. |