The marker exception thrown when a timeout is exceeded.
This error can be thrown under 2 circumstances:
A wait timeout has exceeded, which means that the client timed out waiting for the next
message from the server. In this case, #isRetryable() will be true.
An idle timeout has exceeded, which means that the stream is using manual flow control and
the caller has not called StreamController#request(int) (in case of callback api)
or next on ServerStream#iterator() (in case of blocking api).
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-03-11 UTC."],[],[]]