_SeqOnFeatures (in turn _SeqToKey()) is made to work with ParallelLayer, by not modifying the input NestedMap & creating a new NestedMap
_SeqOnFeatures (in turn _SeqToKey()) is made to work with ParallelLayer, by not modifying the input NestedMap & creating a new NestedMap

PiperOrigin-RevId: 287221831

tensorflow/lingvo,tensorflow/lingvo,tensorflow/lingvo,tensorflow/lingvo