Option for google::cloud::Options to set the interval at which we refresh sessions so they don't get collected by the backend GC.
The GC collects objects older than 60 minutes, so any duration below that (less some slack to allow the calls to be made to refresh the sessions) should suffice.
[[["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 2025-03-14 UTC."],[[["The latest release candidate version is 2.37.0-rc, representing the newest available version."],["This page provides access to documentation for multiple versions of the `SessionPoolKeepAliveIntervalOption`, ranging from 2.11.0 up to the latest release candidate."],["`SessionPoolKeepAliveIntervalOption` is used to set the session refresh interval, preventing backend garbage collection of sessions older than 60 minutes."],["The alias for the `SessionPoolKeepAliveIntervalOption` type is `std::chrono::seconds`."]]],[]]
