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# API Keys API Configuration Options

This library uses the same mechanism ([`google::cloud::Options`](https://docs.cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html)) and the common [options](https://docs.cloud.google.com/cpp/docs/reference/common/latest/group__options.html) as all other C++ client libraries for its configuration. Some `*Option` classes, which are only used in this library, are documented in this page.

###### See Also

[Client Library Configuration](https://docs.cloud.google.com/cpp/docs/reference/common/latest/group__options.html) - for an overview of client library configuration.

### Classes

- [`google::cloud::apikeys_v2::ApiKeysRetryPolicyOption`](https://docs.cloud.google.com/cpp/docs/reference/apikeys/latest/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysRetryPolicyOption)
- [`google::cloud::apikeys_v2::ApiKeysBackoffPolicyOption`](https://docs.cloud.google.com/cpp/docs/reference/apikeys/latest/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysBackoffPolicyOption)
- [`google::cloud::apikeys_v2::ApiKeysConnectionIdempotencyPolicyOption`](https://docs.cloud.google.com/cpp/docs/reference/apikeys/latest/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnectionIdempotencyPolicyOption)
- [`google::cloud::apikeys_v2::ApiKeysPollingPolicyOption`](https://docs.cloud.google.com/cpp/docs/reference/apikeys/latest/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysPollingPolicyOption)

### Types

- [`ApiKeysPolicyOptionList`](about:invalid#zCSafez)