When a task returns this status from a build or process method, it is a signal to the task manager that it should treat it as if the task returned SUCCESS.
Additionally it will migrate all remaining tasks from the current queue to a different one, calling swap_initiator for each applicable task.
Finally, the task manager will call "initiate", if applicable, to kick off tasks in the "queued_tasks" queue.
Task queue relocation mapping:
passive_tasks moves to queued_tasks (which is then fed to active by the initiate call).
active_tasks moves to passive_tasks
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