code: def shapeexprlabel_to_IRI(self, shapeExprLabel: ShExDocParser.ShapeExprLabelContext) \
              -> Union[ShExJ.BNODE, ShExJ.IRIREF]:
          
          if shapeExprLabel.iri():
              return self.iri_to_iriref(shapeExprLabel.iri())
          else:
              return ShExJ.BNODE(shapeExprLabel.blankNode().getText())
docs: shapeExprLabel: iri | blankNode