What is the MetadataValue type of a list when yielding an AssetMaterialization? I don't see it anywhere in the docs - https://docs.dagster.io/_modules/dagster/core/definitions/metadata I'm getting an error at the "tags" entry

Try

MetadataValue.text(str(list(mlcc.experiment_data.tags))

?

Thanks! I actually got it to work by yielding an entire json blob. experiment_data is a dataclass so JsonMetadataValue(asdict(mlcc.experiment_data)) worked.