The above specifies that all methods in the API request
google.rpc.context.ProjectContext and
google.rpc.context.OriginContext.
Available context types are defined in package
google.rpc.context.
This also provides mechanism to allowlist any protobuf message extension that
can be sent in grpc metadata using “x-goog-ext-<extension_id>-bin” and
“x-goog-ext-<extension_id>-jspb” format. For example, list any service
specific protobuf types that can appear in grpc metadata as follows in your
yaml file:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-30 UTC."],[],[],null,[]]