Config options used to construct the gRPC transport.
↳ stubOpts
array
Options used to construct the gRPC stub (see {@link https://grpc.github.io/grpc/core/group__grpc__arg__keys.html}).
↳ channel
Channel
Grpc channel to be used.
↳ interceptors
Interceptor[]|UnaryInterceptorInterface[]
EXPERIMENTAL Interceptors used to intercept RPC invocations before a call starts. Please note that implementations of Google\ApiCore\Transport\Grpc\UnaryInterceptorInterface are considered deprecated and support will be removed in a future release. To prepare for this, please take the time to convert UnaryInterceptorInterface implementations over to a class which extends Grpc\Interceptor.
↳ clientCertSource
callable
A callable which returns the client cert as a string.
[[["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 2025-10-02 UTC."],[],[],null,[]]