Localization for the product category.

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

| Fields ||
|---|---|
| ## `language_code` | `string` Output only. Two-letter ISO 639-1 language code of the localized category. |
| ## `region_code` | `string` Output only. Upper-case two-letter ISO 3166-1 country code of the localized category. |
| ## `value` | `string` Output only. The name of the category in the specified locale. |