Assignment rules are applied to *new* Workflow and Activity executions at schedule time to assign them to a Build ID.

Reachability of tasks for a worker by build id, in one or more task queues.

These rules apply to tasks assigned to a particular Build ID (`source_build_id`) to redirect them to another *compatible* Build ID (`target_build_id`).

Used by the worker versioning APIs, represents an unordered set of one or more versions which are considered to be compatible with each other.

See https://docs.temporal.io/docs/concepts/task-queues/.

Only applies to activity task queues.

Reachability of tasks for a worker on a single task queue.

TaskQueueStats contains statistics about task queue backlog and activity.

Deprecated.

Used for specifying versions the caller is interested in.