- https://purl.semanticip.org/linked-data/sdmx/ML/CascadeSelectionType
TTL - simpleType
- SDMXCommon.xsd
<xs:simpleType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="CascadeSelectionType">
<xs:union memberTypes="xs:boolean ExcludeRootType" />
</xs:simpleType>