CEPII fetcher: data model in dataset.json
For dataset CHELEM-TRADE-CHEL, in dataset.jon, in dimensions_values_labels, fields "exporter" and "importer" are Dict, but field "product" is a List. A similar problem appears in CHELEM_BOP and maybe for other datasets
It would be better if in a given dataset, all fields of dimensions_values_labels had a common type. A List has the advantage of keeping the order of the elements.