code: def getTextualNode(self, textId, subreference=None, prevnext=False, metadata=False):
          
          if  subreference:
              textId = "{}:{}".format(textId, subreference)
  
          if prevnext or metadata:
              return self.getPassagePlus(urn=textId)
          else:
              return self.getPassage(urn=textId)
docs: Retrieve a text node from the API
  
          :param textId: CtsTextMetadata Identifier
          :param subreference: CapitainsCtsPassage Reference
          :param prevnext: Retrieve graph representing previous and next passage
          :param metadata: Retrieve metadata about the passage and the text
          :return: GetPassage or GetPassagePlus CTS API request response