The @id is a IRI/URI identifier
The @id is a IRI/URI identifier
a String which is empty if no @id is assigned, TODO: should this be an Option[String]?
TODO: create hash-tree for faster evaluation
TODO: deprecate this method by implementing Ontology hierarchy
TODO: deprecate this method by implementing Ontology hierarchy
An empty uri means that there is no URI assigned.
An empty uri means that there is no URI assigned.