code: def getTextualNode(self, textId, subreference=None, prevnext=False, metadata=False):
          
          text = CtsText(
              urn=textId,
              retriever=self.endpoint
          )
          if metadata or prevnext:
              return text.getPassagePlus(reference=subreference)
          else:
              return text.getTextualNode(subreference=subreference)
docs: Retrieve a text node from the API
  
          :param textId: CtsTextMetadata Identifier
          :type textId: str
          :param subreference: CapitainsCtsPassage Reference
          :type subreference: str
          :param prevnext: Retrieve graph representing previous and next passage
          :type prevnext: boolean
          :param metadata: Retrieve metadata about the passage and the text
          :type metadata: boolean
          :return: CapitainsCtsPassage
          :rtype: CapitainsCtsPassage