code: def batch_split_words(self, sentences: List[str]) -> List[List[Token]]:
          
          return [self.split_words(sentence) for sentence in sentences]
docs: Spacy needs to do batch processing, or it can be really slow.  This method lets you take
          advantage of that if you want.  Default implementation is to just iterate of the sentences
          and call ``split_words``, but the ``SpacyWordSplitter`` will actually do batched
          processing.