def to(self, _):  # pylint: disable=invalid-name
        """Placeholder `DiskBasedFeature` to implementation. It is a no-op."""
        gb_warning(
            "`DiskBasedFeature.to(device)` is not supported. Leaving unmodified."
        )
        return self
Placeholder `DiskBasedFeature` to implementation. It is a no-op.
python/dgl/graphbolt/impl/torch_based_feature_store.py