for training. In this case, users should call `register_dataset` with
        the same `dataset_id`.
    *   Added a new field, `inject_prefetch`, to
        `tf.data.experimental.OptimizationOptions`. If it is set to
        `True`,`tf.data` will now automatically add a `prefetch` transformation
        to datasets that end in synchronous transformations. This enables data

	PREFETCHNTA (R11)                       // 410f1803
	PREFETCHT0 (BX)                         // 0f180b
	PREFETCHT0 (R11)                        // 410f180b
	PREFETCHT1 (BX)                         // 0f1813
	PREFETCHT1 (R11)                        // 410f1813
	PREFETCHT2 (BX)                         // 0f181b
	PREFETCHT2 (R11)                        // 410f181b
	//TODO: PREFETCHW (BX)                  // 0f0d0b