code: def wrefs(self, index = None, recurse=True):
          
          targets =[]
          self._helper_wrefs(targets, recurse)
          if index is None:
              return targets
          else:
              return targets[index]
docs: Returns a list of word references, these can be Words but also Morphemes or Phonemes.
  
          Arguments:
              index (int or None): If set to an integer, will retrieve and return the n'th element (starting at 0) instead of returning the list of all