The callback that receives the result of the asynchronous Credentials#getRequestMetadata(java.net.URI, java.util.concurrent.Executor,
RequestMetadataCallback). Exactly one method should be called.
Interface for a service account signer. A signer for a service account is capable of signing
bytes using the private key associated with its service account.
Defines the different types of credentials that can be used for metrics.
Each credential type is associated with a label that is used for reporting purposes. Add new
enum constant only when corresponding configs established.
[[["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 2026-04-25 UTC."],[],[]]