Google services can filter the fields in a response using the X-Goog-FieldMask header. This can be useful in large responses, such as listing resources, where some of the fields are uninteresting.
[[["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 2025-03-05 UTC."],[[["This webpage provides a reference for the `FieldMaskOption` struct across multiple versions, ranging from 2.10.1 to 2.37.0-rc, including the latest release candidate."],["The `FieldMaskOption` struct is used within the context of Google Cloud C++ libraries."],["The latest version available on this page is 2.37.0-rc."],["The page documents how to configure server-side filtering using the `X-Goog-FieldMask` header to reduce response size, especially in large resource listings."],["Type `Alias Of` `std::string` is used."]]],[]]