Reachability of tasks for a worker by build id, in one or more task queues.
Used by the worker versioning APIs, represents an unordered set of one or more versions which are considered to be compatible with each other. Currently the versions are always worker build IDs.
Holder for reflection information generated from temporal/api/taskqueue/v1/message.proto
Only applies to activity task queues
Reachability of tasks for a worker on a single task queue.