def __call__(self, batch: List[str]) -> List[List[str]]:
        """
        Tokenize given batch

        Args:
            batch: list of texts to tokenize

        Returns:
            tokenized batch
        """
        if isinstance(batch, (list, tuple)):
            return [sample.split() for sample in batch]
        else:
            raise NotImplementedError('not implemented for types other than'
                                      ' list or tuple')

        Tokenize given batch

        Args:
            batch: list of texts to tokenize

        Returns:
            tokenized batch
        
deeppavlov/models/tokenizers/split_tokenizer.py