tf.contrib.training.SequenceQueueingStateSaver.prefetch_op
The op used to prefetch new data into the state saver.
Running it once enqueues one new input example into the state saver. The first time this gets called, it additionally creates the prefetch_op. Subsequent calls simply return the previously created prefetch_op.
It should be run in a separate thread via e.g. a QueueRunner.
Returns:
An Operation that performs prefetching.
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