Function WrappedDatasetVariantDeviceCopy

tensorflow/core/framework/dataset.cc:177–182

                        UnwrapDatasetVariantOp);

static Status WrappedDatasetVariantDeviceCopy(
    const WrappedDatasetVariantWrapper& from, WrappedDatasetVariantWrapper* to,
    const UnaryVariantOpRegistry::AsyncTensorDeviceCopyFn& copy) {
  *to = WrappedDatasetVariantWrapper(from);
  return Status::OK();
}

#define REGISTER_OPTIONAL_COPY(DIRECTION)               \
  INTERNAL_REGISTER_UNARY_VARIANT_DEVICE_COPY_FUNCTION( \