The returned connection object should not be used directly; instead it should be passed as an argument to the constructor ofApiKeysClient.
The optionaloptionsargument may be used to configure aspects of the returnedApiKeysConnection. Expected options are any of the types in the following option lists:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis document provides a comprehensive reference for the Google Cloud C++ API Keys library, with the latest release candidate version being 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe API Keys library includes various versions ranging from 2.11.0 up to the latest release candidate, each with its own documentation and namespace, such as \u003ccode\u003enamespacegoogle_1_1cloud_1_1apikeys__v2\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe library defines core components such as \u003ccode\u003eApiKeysClient\u003c/code\u003e for managing API keys, \u003ccode\u003eApiKeysConnection\u003c/code\u003e for connecting, and various policy classes like \u003ccode\u003eApiKeysRetryPolicy\u003c/code\u003e for error handling and retries.\u003c/p\u003e\n"],["\u003cp\u003eIt also offers utility structs such as \u003ccode\u003eApiKeysBackoffPolicyOption\u003c/code\u003e and \u003ccode\u003eApiKeysRetryPolicyOption\u003c/code\u003e to help configure options with \u003ccode\u003egoogle::cloud::Options\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe document highlights the \u003ccode\u003eMakeApiKeysConnection\u003c/code\u003e function, which creates an \u003ccode\u003eApiKeysConnection\u003c/code\u003e object and allows for configuration using a variety of option lists such as \u003ccode\u003egoogle::cloud::CommonOptionList\u003c/code\u003e and \u003ccode\u003egoogle::cloud::GrpcOptionList\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["# Namespace google::cloud::apikeys_v2 (2.23.0)\n\nVersion 2.23.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/apikeys/latest/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.41.0](/cpp/docs/reference/apikeys/2.41.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.40.0](/cpp/docs/reference/apikeys/2.40.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.39.0](/cpp/docs/reference/apikeys/2.39.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.38.0](/cpp/docs/reference/apikeys/2.38.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.37.0](/cpp/docs/reference/apikeys/2.37.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.36.0](/cpp/docs/reference/apikeys/2.36.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.35.0](/cpp/docs/reference/apikeys/2.35.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.34.0](/cpp/docs/reference/apikeys/2.34.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.33.0](/cpp/docs/reference/apikeys/2.33.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.32.0](/cpp/docs/reference/apikeys/2.32.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.31.0](/cpp/docs/reference/apikeys/2.31.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.30.0](/cpp/docs/reference/apikeys/2.30.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.29.0](/cpp/docs/reference/apikeys/2.29.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.28.0](/cpp/docs/reference/apikeys/2.28.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.27.0](/cpp/docs/reference/apikeys/2.27.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.26.0](/cpp/docs/reference/apikeys/2.26.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.25.1](/cpp/docs/reference/apikeys/2.25.1/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.24.0](/cpp/docs/reference/apikeys/2.24.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.23.0](/cpp/docs/reference/apikeys/2.23.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.22.1](/cpp/docs/reference/apikeys/2.22.1/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.21.0](/cpp/docs/reference/apikeys/2.21.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.20.0](/cpp/docs/reference/apikeys/2.20.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.19.0](/cpp/docs/reference/apikeys/2.19.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.18.0](/cpp/docs/reference/apikeys/2.18.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.17.0](/cpp/docs/reference/apikeys/2.17.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.16.0](/cpp/docs/reference/apikeys/2.16.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.15.1](/cpp/docs/reference/apikeys/2.15.1/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.14.0](/cpp/docs/reference/apikeys/2.14.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.13.0](/cpp/docs/reference/apikeys/2.13.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.12.0](/cpp/docs/reference/apikeys/2.12.0/namespacegoogle_1_1cloud_1_1apikeys__v2)\n- [2.11.0](/cpp/docs/reference/apikeys/2.11.0/namespacegoogle_1_1cloud_1_1apikeys__v2) \n\nClasses\n-------\n\n### [ApiKeysClient](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysClient)\n\nManages the API keys associated with projects.\n\n### [ApiKeysConnection](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection)\n\nThe [`ApiKeysConnection`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection) object for [`ApiKeysClient`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysClient).\n\n### [ApiKeysConnectionIdempotencyPolicy](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnectionIdempotencyPolicy)\n\n### [ApiKeysLimitedErrorCountRetryPolicy](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysLimitedErrorCountRetryPolicy)\n\nA retry policy for [`ApiKeysConnection`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection) based on counting errors.\n\n### [ApiKeysLimitedTimeRetryPolicy](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysLimitedTimeRetryPolicy)\n\nA retry policy for [`ApiKeysConnection`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection) based on elapsed time.\n\n### [ApiKeysRetryPolicy](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysRetryPolicy)\n\nThe retry policy for [`ApiKeysConnection`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection).\n\nStructs\n-------\n\n### [ApiKeysBackoffPolicyOption](/cpp/docs/reference/apikeys/2.23.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysBackoffPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the backoff policy.\n\n### [ApiKeysConnectionIdempotencyPolicyOption](/cpp/docs/reference/apikeys/2.23.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnectionIdempotencyPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure which operations are retried.\n\n### [ApiKeysPollingPolicyOption](/cpp/docs/reference/apikeys/2.23.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysPollingPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the long-running operations polling policy.\n\n### [ApiKeysRetryPolicyOption](/cpp/docs/reference/apikeys/2.23.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysRetryPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the retry policy.\n\nFunctions\n---------\n\n### MakeApiKeysConnection(Options)\n\nA factory function to construct an object of type [`ApiKeysConnection`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection). \nThe returned connection object should not be used directly; instead it should be passed as an argument to the constructor of [ApiKeysClient](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysClient).\n\nThe optional `options` argument may be used to configure aspects of the returned [`ApiKeysConnection`](/cpp/docs/reference/apikeys/2.23.0/classgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnection). Expected options are any of the types in the following option lists:\n\n- [`google::cloud::CommonOptionList`](about:invalid#zCSafez)\n- [`google::cloud::GrpcOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::UnifiedCredentialsOptionList`](about:invalid#zCSafez)\n- [`google::cloud::apikeys_v2::ApiKeysPolicyOptionList`](about:invalid#zCSafez)\n\n| **Note:** Unexpected options will be ignored. To log unexpected options instead, set `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` in the environment.\n\n### MakeDefaultApiKeysConnectionIdempotencyPolicy()"]]
