A response with all available products.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/services/reach_plan_service.proto)

| Fields ||
|---|---|
| ## `product_metadata[]` | `https://developers.google.com/google-ads/api/reference/rpc/v25/ProductMetadata` The list of products available for planning and related targeting metadata. |